54215739 has 6 divisors (see below), whose sum is σ = 78311636. Its totient is φ = 36143820.

The previous prime is 54215719. The next prime is 54215741. The reversal of 54215739 is 93751245.

It is a de Polignac number, because none of the positive numbers 2^k-54215739 is a prime.

It is a super-2 number, since 2×54215739² = 5878692710632242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54215719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3011977 + ... + 3011994.

Almost surely, 2^54215739 is an apocalyptic number.

54215739 is a deficient number, since it is larger than the sum of its proper divisors (24095897).

54215739 is a wasteful number, since it uses less digits than its factorization.

54215739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023977 (or 6023974 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 54215739 is about 7363.1337757778. The cubic root of 54215739 is about 378.4790055755.

The spelling of 54215739 in words is "fifty-four million, two hundred fifteen thousand, seven hundred thirty-nine".