54515138 has 4 divisors (see below), whose sum is σ = 81772710. Its totient is φ = 27257568.

The previous prime is 54515101. The next prime is 54515189. The reversal of 54515138 is 83151545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83151545 = 5 ⋅16630309.

It can be written as a sum of positive squares in only one way, i.e., 33327529 + 21187609 = 5773^2 + 4603^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13628783 + ... + 13628786.

Almost surely, 2^54515138 is an apocalyptic number.

54515138 is a deficient number, since it is larger than the sum of its proper divisors (27257572).

54515138 is a wasteful number, since it uses less digits than its factorization.

54515138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27257571.

The product of its digits is 12000, while the sum is 32.

The square root of 54515138 is about 7383.4367336627. The cubic root of 54515138 is about 379.1744265261.

The spelling of 54515138 in words is "fifty-four million, five hundred fifteen thousand, one hundred thirty-eight".