52430440 has 32 divisors (see below), whose sum is σ = 119193480. Its totient is φ = 20754432.

The previous prime is 52430437. The next prime is 52430449. The reversal of 52430440 is 4403425.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 41447844 + 10982596 = 6438^2 + 3314^2 .

It is not an unprimeable number, because it can be changed into a prime (52430449) 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, 2877 + ... + 10636.

Almost surely, 2^52430440 is an apocalyptic number.

It is an amenable number.

52430440 is an abundant number, since it is smaller than the sum of its proper divisors (66763040).

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

52430440 is a wasteful number, since it uses less digits than its factorization.

52430440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13621 (or 13617 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 52430440 is about 7240.8866860351. The cubic root of 52430440 is about 374.2781729482.

Adding to 52430440 its reverse (4403425), we get a palindrome (56833865).

The spelling of 52430440 in words is "fifty-two million, four hundred thirty thousand, four hundred forty".