55108957 has 4 divisors (see below), whose sum is σ = 56281536. Its totient is φ = 53936380.

The previous prime is 55108931. The next prime is 55108969. The reversal of 55108957 is 75980155.

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 55108957 - 2⁷ = 55108829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55108997) 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, 586219 + ... + 586312.

It is an arithmetic number, because the mean of its divisors is an integer number (14070384).

Almost surely, 2^55108957 is an apocalyptic number.

It is an amenable number.

55108957 is a deficient number, since it is larger than the sum of its proper divisors (1172579).

55108957 is a wasteful number, since it uses less digits than its factorization.

55108957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172578.

The product of its (nonzero) digits is 63000, while the sum is 40.

The square root of 55108957 is about 7423.5407320227. The cubic root of 55108957 is about 380.5462066655.

It can be divided in two parts, 55108 and 957, that added together give a palindrome (56065).

The spelling of 55108957 in words is "fifty-five million, one hundred eight thousand, nine hundred fifty-seven".