55123057 has 8 divisors (see below), whose sum is σ = 61414272. Its totient is φ = 49045200.

The previous prime is 55123049. The next prime is 55123067. The reversal of 55123057 is 75032155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55123057 - 2³ = 55123049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55123037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52794 + ... + 53827.

It is an arithmetic number, because the mean of its divisors is an integer number (7676784).

Almost surely, 2^55123057 is an apocalyptic number.

It is an amenable number.

55123057 is a deficient number, since it is larger than the sum of its proper divisors (6291215).

55123057 is a wasteful number, since it uses less digits than its factorization.

55123057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106679.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 55123057 is about 7424.4903528794. The cubic root of 55123057 is about 380.5786590063.

The spelling of 55123057 in words is "fifty-five million, one hundred twenty-three thousand, fifty-seven".