54212391 has 6 divisors (see below), whose sum is σ = 78306800. Its totient is φ = 36141588.

The previous prime is 54212387. The next prime is 54212399. The reversal of 54212391 is 19321245.

54212391 is a `hidden beast` number, since 5 + 421 + 239 + 1 = 666.

It is not a de Polignac number, because 54212391 - 2² = 54212387 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 (54212399) 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, 3011791 + ... + 3011808.

Almost surely, 2^54212391 is an apocalyptic number.

54212391 is a deficient number, since it is larger than the sum of its proper divisors (24094409).

54212391 is a wasteful number, since it uses less digits than its factorization.

54212391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6023605 (or 6023602 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 54212391 is about 7362.9064234173. The cubic root of 54212391 is about 378.4712146411.

The spelling of 54212391 in words is "fifty-four million, two hundred twelve thousand, three hundred ninety-one".