505561507 has 8 divisors (see below), whose sum is σ = 551864880. Its totient is φ = 459315360.

The previous prime is 505561499. The next prime is 505561513. The reversal of 505561507 is 705165505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505561507 - 2³ = 505561499 is a prime.

It is a super-2 number, since 2×505561507² = 511184874720222098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505561517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5353 + ... + 32245.

It is an arithmetic number, because the mean of its divisors is an integer number (68983110).

Almost surely, 2^505561507 is an apocalyptic number.

505561507 is a deficient number, since it is larger than the sum of its proper divisors (46303373).

505561507 is a wasteful number, since it uses less digits than its factorization.

505561507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28613.

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 505561507 is about 22484.6949501211. The cubic root of 505561507 is about 796.6324627352.

The spelling of 505561507 in words is "five hundred five million, five hundred sixty-one thousand, five hundred seven".