54151615 has 24 divisors (see below), whose sum is σ = 79576560. Its totient is φ = 35175168.

The previous prime is 54151589. The next prime is 54151621. The reversal of 54151615 is 51615145.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-54151615 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1162 + ... + 10471.

It is an arithmetic number, because the mean of its divisors is an integer number (3315690).

Almost surely, 2^54151615 is an apocalyptic number.

54151615 is a deficient number, since it is larger than the sum of its proper divisors (25424945).

54151615 is a wasteful number, since it uses less digits than its factorization.

54151615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11671 (or 11664 counting only the distinct ones).

The product of its digits is 3000, while the sum is 28.

The square root of 54151615 is about 7358.7780915041. The cubic root of 54151615 is about 378.3297305812.

The spelling of 54151615 in words is "fifty-four million, one hundred fifty-one thousand, six hundred fifteen".