43572056401 has 2 divisors, whose sum is σ = 43572056402. Its totient is φ = 43572056400.

The previous prime is 43572056393. The next prime is 43572056443. The reversal of 43572056401 is 10465027534.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41981961025 + 1590095376 = 204895^2 + 39876^2 .

It is a cyclic number.

It is not a de Polignac number, because 43572056401 - 2³ = 43572056393 is a prime.

It is not a weakly prime, because it can be changed into another prime (43572056471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21786028200 + 21786028201.

It is an arithmetic number, because the mean of its divisors is an integer number (21786028201).

Almost surely, 2^43572056401 is an apocalyptic number.

It is an amenable number.

43572056401 is a deficient number, since it is larger than the sum of its proper divisors (1).

43572056401 is an equidigital number, since it uses as much as digits as its factorization.

43572056401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 43572056401 in words is "forty-three billion, five hundred seventy-two million, fifty-six thousand, four hundred one".