55708057 has 4 divisors (see below), whose sum is σ = 58640080. Its totient is φ = 52776036.

The previous prime is 55708049. The next prime is 55708069. The reversal of 55708057 is 75080755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55708057 - 2³ = 55708049 is a prime.

It is a super-2 number, since 2×55708057² = 6206775229430498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55708087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1465983 + ... + 1466020.

It is an arithmetic number, because the mean of its divisors is an integer number (14660020).

Almost surely, 2^55708057 is an apocalyptic number.

It is an amenable number.

55708057 is a deficient number, since it is larger than the sum of its proper divisors (2932023).

55708057 is a wasteful number, since it uses less digits than its factorization.

55708057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2932022.

The product of its (nonzero) digits is 49000, while the sum is 37.

The square root of 55708057 is about 7463.7830220338. The cubic root of 55708057 is about 381.9202363545.

The spelling of 55708057 in words is "fifty-five million, seven hundred eight thousand, fifty-seven".