52764021 has 32 divisors (see below), whose sum is σ = 81984000. Its totient is φ = 33493824.

The previous prime is 52764017. The next prime is 52764031. The reversal of 52764021 is 12046725.

It is not a de Polignac number, because 52764021 - 2² = 52764017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52764011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61431 + ... + 62283.

It is an arithmetic number, because the mean of its divisors is an integer number (2562000).

Almost surely, 2^52764021 is an apocalyptic number.

It is an amenable number.

52764021 is a deficient number, since it is larger than the sum of its proper divisors (29219979).

52764021 is a wasteful number, since it uses less digits than its factorization.

52764021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970 (or 964 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 52764021 is about 7263.8847044815. The cubic root of 52764021 is about 375.0702588357.

The spelling of 52764021 in words is "fifty-two million, seven hundred sixty-four thousand, twenty-one".