52323440 has 40 divisors (see below), whose sum is σ = 131012448. Its totient is φ = 19319040.

The previous prime is 52323391. The next prime is 52323457. The reversal of 52323440 is 4432325.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24116 + ... + 26195.

Almost surely, 2^52323440 is an apocalyptic number.

It is an amenable number.

52323440 is an abundant number, since it is smaller than the sum of its proper divisors (78689008).

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

52323440 is a wasteful number, since it uses less digits than its factorization.

52323440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50337 (or 50331 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 52323440 is about 7233.4943146449. The cubic root of 52323440 is about 374.0233906844.

Adding to 52323440 its reverse (4432325), we get a palindrome (56755765).

The spelling of 52323440 in words is "fifty-two million, three hundred twenty-three thousand, four hundred forty".