55707505 has 32 divisors (see below), whose sum is σ = 79315200. Its totient is φ = 36771072.

The previous prime is 55707499. The next prime is 55707511. The reversal of 55707505 is 50570755.

It is an interprime number because it is at equal distance from previous prime (55707499) and next prime (55707511).

It is a cyclic number.

It is not a de Polignac number, because 55707505 - 2³ = 55707497 is a prime.

It is a super-2 number, since 2×55707505² = 6206652226650050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109191 + ... + 109699.

It is an arithmetic number, because the mean of its divisors is an integer number (2478600).

Almost surely, 2^55707505 is an apocalyptic number.

It is an amenable number.

55707505 is a deficient number, since it is larger than the sum of its proper divisors (23607695).

55707505 is a wasteful number, since it uses less digits than its factorization.

55707505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633.

The product of its (nonzero) digits is 30625, while the sum is 34.

The square root of 55707505 is about 7463.7460433753. The cubic root of 55707505 is about 381.9189748932.

It can be divided in two parts, 5570750 and 5, that added together give a palindrome (5570755).

The spelling of 55707505 in words is "fifty-five million, seven hundred seven thousand, five hundred five".