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55500505 = 511100101
BaseRepresentation
bin1101001110110…
…1111011011001
310212102201101021
43103231323121
5103202004010
65301322441
71242514024
oct323557331
9125381337
1055500505
1129368395
1216706421
13b662c48
14752a1bb
154d148da
hex34eded9

55500505 has 4 divisors (see below), whose sum is σ = 66600612. Its totient is φ = 44400400.

The previous prime is 55500499. The next prime is 55500527. The reversal of 55500505 is 50500555.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30869136 + 24631369 = 5556^2 + 4963^2 .

It is not a de Polignac number, because 55500505 - 29 = 55499993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55500505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5550046 + ... + 5550055.

It is an arithmetic number, because the mean of its divisors is an integer number (16650153).

Almost surely, 255500505 is an apocalyptic number.

It is an amenable number.

55500505 is a deficient number, since it is larger than the sum of its proper divisors (11100107).

55500505 is a wasteful number, since it uses less digits than its factorization.

55500505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11100106.

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

The square root of 55500505 is about 7449.8661061794. The cubic root of 55500505 is about 381.4453382219.

The spelling of 55500505 in words is "fifty-five million, five hundred thousand, five hundred five".

Divisors: 1 5 11100101 55500505