52310640 has 160 divisors (see below), whose sum is σ = 171417600. Its totient is φ = 13178880.

The previous prime is 52310633. The next prime is 52310663. The reversal of 52310640 is 4601325.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 587716 + ... + 587804.

It is an arithmetic number, because the mean of its divisors is an integer number (1071360).

Almost surely, 2^52310640 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 52310640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85708800).

52310640 is an abundant number, since it is smaller than the sum of its proper divisors (119106960).

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

52310640 is a wasteful number, since it uses less digits than its factorization.

52310640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 52310640 is about 7232.6094875916. The cubic root of 52310640 is about 373.9928888045.

Adding to 52310640 its reverse (4601325), we get a palindrome (56911965).

The spelling of 52310640 in words is "fifty-two million, three hundred ten thousand, six hundred forty".