54431431 has 4 divisors (see below), whose sum is σ = 54457864. Its totient is φ = 54405000.

The previous prime is 54431411. The next prime is 54431449. The reversal of 54431431 is 13413445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13413445 = 5 ⋅2682689.

It is a cyclic number.

It is not a de Polignac number, because 54431431 - 2⁷ = 54431303 is a prime.

It is a super-2 number, since 2×54431431² = 5925561361415522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54431396 and 54431405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54431411) 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, 9840 + ... + 14341.

It is an arithmetic number, because the mean of its divisors is an integer number (13614466).

Almost surely, 2^54431431 is an apocalyptic number.

54431431 is a deficient number, since it is larger than the sum of its proper divisors (26433).

54431431 is a wasteful number, since it uses less digits than its factorization.

54431431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26432.

The product of its digits is 2880, while the sum is 25.

The square root of 54431431 is about 7377.7659897831. The cubic root of 54431431 is about 378.9802553049.

Adding to 54431431 its reverse (13413445), we get a palindrome (67844876).

The spelling of 54431431 in words is "fifty-four million, four hundred thirty-one thousand, four hundred thirty-one".