55175553 has 8 divisors (see below), whose sum is σ = 81741600. Its totient is φ = 36783684.

The previous prime is 55175543. The next prime is 55175569. The reversal of 55175553 is 35557155.

55175553 is a `hidden beast` number, since 551 + 7 + 55 + 53 = 666.

It is not a de Polignac number, because 55175553 - 2⁹ = 55175041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55175503) 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, 1021743 + ... + 1021796.

It is an arithmetic number, because the mean of its divisors is an integer number (10217700).

Almost surely, 2^55175553 is an apocalyptic number.

It is an amenable number.

55175553 is a deficient number, since it is larger than the sum of its proper divisors (26566047).

55175553 is a wasteful number, since it uses less digits than its factorization.

55175553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043548 (or 2043542 counting only the distinct ones).

The product of its digits is 65625, while the sum is 36.

The square root of 55175553 is about 7428.0248384076. The cubic root of 55175553 is about 380.6994343496.

The spelling of 55175553 in words is "fifty-five million, one hundred seventy-five thousand, five hundred fifty-three".