54865531 has 8 divisors (see below), whose sum is σ = 62928864. Its totient is φ = 46858560.

The previous prime is 54865519. The next prime is 54865537. The reversal of 54865531 is 13556845.

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

It is not a de Polignac number, because 54865531 - 2²¹ = 52768379 is a prime.

It is a super-2 number, since 2×54865531² = 6020452983823922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54865537) 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, 11980 + ... + 15913.

It is an arithmetic number, because the mean of its divisors is an integer number (7866108).

Almost surely, 2^54865531 is an apocalyptic number.

54865531 is a deficient number, since it is larger than the sum of its proper divisors (8063333).

54865531 is a wasteful number, since it uses less digits than its factorization.

54865531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28181.

The product of its digits is 72000, while the sum is 37.

The square root of 54865531 is about 7407.1270408978. The cubic root of 54865531 is about 379.9850663568.

The spelling of 54865531 in words is "fifty-four million, eight hundred sixty-five thousand, five hundred thirty-one".