55500657 has 4 divisors (see below), whose sum is σ = 74000880. Its totient is φ = 37000436.

The previous prime is 55500647. The next prime is 55500661. The reversal of 55500657 is 75600555.

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 55500657 - 2¹² = 55496561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55500607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9250107 + ... + 9250112.

It is an arithmetic number, because the mean of its divisors is an integer number (18500220).

Almost surely, 2^55500657 is an apocalyptic number.

It is an amenable number.

55500657 is a deficient number, since it is larger than the sum of its proper divisors (18500223).

55500657 is a wasteful number, since it uses less digits than its factorization.

55500657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18500222.

The product of its (nonzero) digits is 26250, while the sum is 33.

The square root of 55500657 is about 7449.8763076980. The cubic root of 55500657 is about 381.4456864448.

The spelling of 55500657 in words is "fifty-five million, five hundred thousand, six hundred fifty-seven".