52431040 has 28 divisors (see below), whose sum is σ = 124852176. Its totient is φ = 20972288.

The previous prime is 52431031. The next prime is 52431073. The reversal of 52431040 is 4013425.

It is a junction number, because it is equal to n+sod(n) for n = 52430999 and 52431017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81604 + ... + 82243.

Almost surely, 2^52431040 is an apocalyptic number.

It is an amenable number.

52431040 is an abundant number, since it is smaller than the sum of its proper divisors (72421136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52431040 is a wasteful number, since it uses less digits than its factorization.

52431040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163864 (or 163854 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 52431040 is about 7240.9281173065. The cubic root of 52431040 is about 374.2796006560.

Adding to 52431040 its reverse (4013425), we get a palindrome (56444465).

The spelling of 52431040 in words is "fifty-two million, four hundred thirty-one thousand, forty".