52291764 has 72 divisors (see below), whose sum is σ = 155529920. Its totient is φ = 14883696.

The previous prime is 52291751. The next prime is 52291787. The reversal of 52291764 is 46719225.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198697 + ... + 198959.

Almost surely, 2^52291764 is an apocalyptic number.

52291764 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52291764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77764960).

52291764 is an abundant number, since it is smaller than the sum of its proper divisors (103238156).

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

52291764 is a wasteful number, since it uses less digits than its factorization.

52291764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 275 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 52291764 is about 7231.3044466403. The cubic root of 52291764 is about 373.9478989830.

The spelling of 52291764 in words is "fifty-two million, two hundred ninety-one thousand, seven hundred sixty-four".