54111531 has 8 divisors (see below), whose sum is σ = 72184320. Its totient is φ = 36056552.

The previous prime is 54111529. The next prime is 54111539. The reversal of 54111531 is 13511145.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 54111531 - 2¹ = 54111529 is a prime.

It is a super-2 number, since 2×54111531² = 5856115574327922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54111498 and 54111507.

It is not an unprimeable number, because it can be changed into a prime (54111539) 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, 6466 + ... + 12248.

It is an arithmetic number, because the mean of its divisors is an integer number (9023040).

Almost surely, 2^54111531 is an apocalyptic number.

54111531 is a deficient number, since it is larger than the sum of its proper divisors (18072789).

54111531 is a wasteful number, since it uses less digits than its factorization.

54111531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8905.

The product of its digits is 300, while the sum is 21.

The square root of 54111531 is about 7356.0540373219. The cubic root of 54111531 is about 378.2363587138.

Adding to 54111531 its reverse (13511145), we get a palindrome (67622676).

The spelling of 54111531 in words is "fifty-four million, one hundred eleven thousand, five hundred thirty-one".