55516057 has 4 divisors (see below), whose sum is σ = 55534336. Its totient is φ = 55497780.

The previous prime is 55516051. The next prime is 55516079. The reversal of 55516057 is 75061555.

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 55516057 - 2³ = 55516049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55516051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3369 + ... + 11062.

It is an arithmetic number, because the mean of its divisors is an integer number (13883584).

Almost surely, 2^55516057 is an apocalyptic number.

It is an amenable number.

55516057 is a deficient number, since it is larger than the sum of its proper divisors (18279).

55516057 is a wasteful number, since it uses less digits than its factorization.

55516057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18278.

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

The square root of 55516057 is about 7450.9098102178. The cubic root of 55516057 is about 381.4809636268.

The spelling of 55516057 in words is "fifty-five million, five hundred sixteen thousand, fifty-seven".