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505050505 = 5412719091
BaseRepresentation
bin11110000110100…
…111010110001001
31022012100020001021
4132012213112021
52013243104010
6122040552441
715341600311
oct3606472611
91265306037
10505050505
1123a0a6a13
12121182721
1380832b6b
144b10c441
152e5148da
hex1e1a7589

505050505 has 16 divisors (see below), whose sum is σ = 623202048. Its totient is φ = 392688000.

The previous prime is 505050493. The next prime is 505050517.

505050505 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (505050493) and next prime (505050517).

It is not a de Polignac number, because 505050505 - 211 = 505048457 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

505050505 is an undulating number in base 10.

505050505 is a modest number, since divided by 50505 gives 505 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 505050505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51010 + ... + 60100.

It is an arithmetic number, because the mean of its divisors is an integer number (38950128).

Almost surely, 2505050505 is an apocalyptic number.

It is an amenable number.

505050505 is a deficient number, since it is larger than the sum of its proper divisors (118151543).

505050505 is a wasteful number, since it uses less digits than its factorization.

505050505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9408.

The product of its (nonzero) digits is 3125, while the sum is 25.

The square root of 505050505 is about 22473.3287476511. The cubic root of 505050505 is about 796.3639705030.

It can be divided in two parts, 5050 and 50505, that added together give a palindrome (55555).

The spelling of 505050505 in words is "five hundred five million, fifty thousand, five hundred five".

Divisors: 1 5 41 205 271 1355 9091 11111 45455 55555 372731 1863655 2463661 12318305 101010101 505050505