55275057 has 24 divisors (see below), whose sum is σ = 81214848. Its totient is φ = 36223200.

The previous prime is 55275013. The next prime is 55275061. The reversal of 55275057 is 75057255.

55275057 is a `hidden beast` number, since 552 + 7 + 50 + 57 = 666.

It is not a de Polignac number, because 55275057 - 2⁶ = 55274993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55275097) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 203832 + ... + 204102.

It is an arithmetic number, because the mean of its divisors is an integer number (3383952).

Almost surely, 2^55275057 is an apocalyptic number.

It is an amenable number.

55275057 is a deficient number, since it is larger than the sum of its proper divisors (25939791).

55275057 is a wasteful number, since it uses less digits than its factorization.

55275057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 61250, while the sum is 36.

The square root of 55275057 is about 7434.7196988185. The cubic root of 55275057 is about 380.9281489738.

The spelling of 55275057 in words is "fifty-five million, two hundred seventy-five thousand, fifty-seven".