52621052621 has 12 divisors (see below), whose sum is σ = 53254599732. Its totient is φ = 51994800000.

The previous prime is 52621052609. The next prime is 52621052633. The reversal of 52621052621 is 12625012625.

It is an interprime number because it is at equal distance from previous prime (52621052609) and next prime (52621052633).

It can be written as a sum of positive squares in 6 ways, for example, as 25392422500 + 27228630121 = 159350^2 + 165011^2 .

It is not a de Polignac number, because 52621052621 - 2¹⁸ = 52620790477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52621052821) 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, 5309771 + ... + 5319671.

It is an arithmetic number, because the mean of its divisors is an integer number (4437883311).

Almost surely, 2^52621052621 is an apocalyptic number.

It is an amenable number.

52621052621 is a deficient number, since it is larger than the sum of its proper divisors (633547111).

52621052621 is an equidigital number, since it uses as much as digits as its factorization.

52621052621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10624 (or 10523 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 52621052621 in words is "fifty-two billion, six hundred twenty-one million, fifty-two thousand, six hundred twenty-one".