52721622 has 24 divisors (see below), whose sum is σ = 115797864. Its totient is φ = 17332704.

The previous prime is 52721621. The next prime is 52721651. The reversal of 52721622 is 22612725.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52721621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18748 + ... + 21375.

It is an arithmetic number, because the mean of its divisors is an integer number (4824911).

Almost surely, 2^52721622 is an apocalyptic number.

52721622 is an abundant number, since it is smaller than the sum of its proper divisors (63076242).

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

52721622 is a wasteful number, since it uses less digits than its factorization.

52721622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40204 (or 40201 counting only the distinct ones).

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

The square root of 52721622 is about 7260.9656382605. The cubic root of 52721622 is about 374.9697682295.

The spelling of 52721622 in words is "fifty-two million, seven hundred twenty-one thousand, six hundred twenty-two".