54864681 has 8 divisors (see below), whose sum is σ = 74352384. Its totient is φ = 35976720.

The previous prime is 54864653. The next prime is 54864703. The reversal of 54864681 is 18646845.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54864681 - 2⁷ = 54864553 is a prime.

It is a super-2 number, since 2×54864681² = 6020266442463522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54864281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149721 + ... + 150086.

It is an arithmetic number, because the mean of its divisors is an integer number (9294048).

Almost surely, 2^54864681 is an apocalyptic number.

It is an amenable number.

54864681 is a deficient number, since it is larger than the sum of its proper divisors (19487703).

54864681 is a wasteful number, since it uses less digits than its factorization.

54864681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299871.

The product of its digits is 184320, while the sum is 42.

The square root of 54864681 is about 7407.0696635039. The cubic root of 54864681 is about 379.9831040502.

The spelling of 54864681 in words is "fifty-four million, eight hundred sixty-four thousand, six hundred eighty-one".