55577475 has 48 divisors (see below), whose sum is σ = 103014240. Its totient is φ = 29376000.

The previous prime is 55577429. The next prime is 55577477. The reversal of 55577475 is 57477555.

It is a happy number.

55577475 is a `hidden beast` number, since 5 + 5 + 577 + 4 + 75 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-55577475 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55577475.

It is not an unprimeable number, because it can be changed into a prime (55577477) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 92175 + ... + 92775.

It is an arithmetic number, because the mean of its divisors is an integer number (2146130).

Almost surely, 2^55577475 is an apocalyptic number.

55577475 is a deficient number, since it is larger than the sum of its proper divisors (47436765).

55577475 is a wasteful number, since it uses less digits than its factorization.

55577475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757 (or 746 counting only the distinct ones).

The product of its digits is 857500, while the sum is 45.

The square root of 55577475 is about 7455.0301810254. The cubic root of 55577475 is about 381.6215905865.

The spelling of 55577475 in words is "fifty-five million, five hundred seventy-seven thousand, four hundred seventy-five".