54512557 has 12 divisors (see below), whose sum is σ = 63445788. Its totient is φ = 46640000.

The previous prime is 54512551. The next prime is 54512561. The reversal of 54512557 is 75521545.

It can be written as a sum of positive squares in 2 ways, for example, as 30980356 + 23532201 = 5566^2 + 4851^2 .

It is not a de Polignac number, because 54512557 - 2⁷ = 54512429 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 (54512551) 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, 11194 + ... + 15307.

It is an arithmetic number, because the mean of its divisors is an integer number (5287149).

Almost surely, 2^54512557 is an apocalyptic number.

It is an amenable number.

54512557 is a deficient number, since it is larger than the sum of its proper divisors (8933231).

54512557 is a wasteful number, since it uses less digits than its factorization.

54512557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26540 (or 26529 counting only the distinct ones).

The product of its digits is 35000, while the sum is 34.

The square root of 54512557 is about 7383.2619484886. The cubic root of 54512557 is about 379.1684424718.

It can be divided in two parts, 5451 and 2557, that added together give a palindrome (8008).

The spelling of 54512557 in words is "fifty-four million, five hundred twelve thousand, five hundred fifty-seven".