55256571 has 12 divisors (see below), whose sum is σ = 82567680. Its totient is φ = 35567280.

The previous prime is 55256549. The next prime is 55256573. The reversal of 55256571 is 17565255.

It is a happy number.

55256571 is a `hidden beast` number, since 5 + 525 + 65 + 71 = 666.

It is not a de Polignac number, because 55256571 - 2⁶ = 55256507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55256573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105595 + ... + 106116.

It is an arithmetic number, because the mean of its divisors is an integer number (6880640).

Almost surely, 2^55256571 is an apocalyptic number.

55256571 is a deficient number, since it is larger than the sum of its proper divisors (27311109).

55256571 is a wasteful number, since it uses less digits than its factorization.

55256571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211746 (or 211743 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 55256571 is about 7433.4763738106. The cubic root of 55256571 is about 380.8856788055.

The spelling of 55256571 in words is "fifty-five million, two hundred fifty-six thousand, five hundred seventy-one".