55770507 has 36 divisors (see below), whose sum is σ = 89678784. Its totient is φ = 33359040.

The previous prime is 55770497. The next prime is 55770563. The reversal of 55770507 is 70507755.

It is not a de Polignac number, because 55770507 - 2¹² = 55766411 is a prime.

It is a super-2 number, since 2×55770507² = 6220698902074098, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55770577) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 55782 + ... + 56772.

Almost surely, 2^55770507 is an apocalyptic number.

55770507 is a deficient number, since it is larger than the sum of its proper divisors (33908277).

55770507 is a wasteful number, since it uses less digits than its factorization.

55770507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 42875, while the sum is 36.

The square root of 55770507 is about 7467.9653855652. The cubic root of 55770507 is about 382.0628968188.

The spelling of 55770507 in words is "fifty-five million, seven hundred seventy thousand, five hundred seven".