54406531 has 4 divisors (see below), whose sum is σ = 54427464. Its totient is φ = 54385600.

The previous prime is 54406529. The next prime is 54406559. The reversal of 54406531 is 13560445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13560445 = 5 ⋅2712089.

It is a cyclic number.

It is not a de Polignac number, because 54406531 - 2¹ = 54406529 is a prime.

It is a super-2 number, since 2×54406531² = 5920141230907922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54406531.

It is not an unprimeable number, because it can be changed into a prime (54406031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5905 + ... + 11986.

It is an arithmetic number, because the mean of its divisors is an integer number (13606866).

Almost surely, 2^54406531 is an apocalyptic number.

54406531 is a deficient number, since it is larger than the sum of its proper divisors (20933).

54406531 is a wasteful number, since it uses less digits than its factorization.

54406531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20932.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 54406531 is about 7376.0782940530. The cubic root of 54406531 is about 378.9224575246.

Adding to 54406531 its reverse (13560445), we get a palindrome (67966976).

The spelling of 54406531 in words is "fifty-four million, four hundred six thousand, five hundred thirty-one".