52397664 has 144 divisors (see below), whose sum is σ = 158034240. Its totient is φ = 15070720.

The previous prime is 52397633. The next prime is 52397669. The reversal of 52397664 is 46679325.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52397669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 888067 + ... + 888125.

It is an arithmetic number, because the mean of its divisors is an integer number (1097460).

Almost surely, 2^52397664 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 52397664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79017120).

52397664 is an abundant number, since it is smaller than the sum of its proper divisors (105636576).

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

52397664 is a wasteful number, since it uses less digits than its factorization.

52397664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 104 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The square root of 52397664 is about 7238.6230734857. The cubic root of 52397664 is about 374.2001654744.

The spelling of 52397664 in words is "fifty-two million, three hundred ninety-seven thousand, six hundred sixty-four".