52631340 has 48 divisors (see below), whose sum is σ = 148549632. Its totient is φ = 13922496.

The previous prime is 52631339. The next prime is 52631393. The reversal of 52631340 is 4313625.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 52631340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4167 + ... + 11073.

It is an arithmetic number, because the mean of its divisors is an integer number (3094784).

Almost surely, 2^52631340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52631340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74274816).

52631340 is an abundant number, since it is smaller than the sum of its proper divisors (95918292).

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

52631340 is a wasteful number, since it uses less digits than its factorization.

52631340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7046 (or 7044 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 52631340 is about 7254.7460327705. The cubic root of 52631340 is about 374.7556096524.

Adding to 52631340 its reverse (4313625), we get a palindrome (56944965).

The spelling of 52631340 in words is "fifty-two million, six hundred thirty-one thousand, three hundred forty".