52722726 has 48 divisors (see below), whose sum is σ = 123243120. Its totient is φ = 14992320.

The previous prime is 52722697. The next prime is 52722731. The reversal of 52722726 is 62722725.

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, 114136 + ... + 114596.

It is an arithmetic number, because the mean of its divisors is an integer number (2567565).

Almost surely, 2^52722726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52722726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61621560).

52722726 is an abundant number, since it is smaller than the sum of its proper divisors (70520394).

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

52722726 is a wasteful number, since it uses less digits than its factorization.

52722726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 862 counting only the distinct ones).

The product of its digits is 23520, while the sum is 33.

The square root of 52722726 is about 7261.0416608087. The cubic root of 52722726 is about 374.9723855221.

Subtracting 52722726 from its reverse (62722725), we obtain a palindrome (9999999).

The spelling of 52722726 in words is "fifty-two million, seven hundred twenty-two thousand, seven hundred twenty-six".