916531201 has 2 divisors, whose sum is σ = 916531202. Its totient is φ = 916531200.

The previous prime is 916531153. The next prime is 916531207. The reversal of 916531201 is 102135619.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 854042176 + 62489025 = 29224^2 + 7905^2 .

It is a cyclic number.

It is not a de Polignac number, because 916531201 - 2²³ = 908142593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 916531201.

It is not a weakly prime, because it can be changed into another prime (916531207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 458265600 + 458265601.

It is an arithmetic number, because the mean of its divisors is an integer number (458265601).

Almost surely, 2^916531201 is an apocalyptic number.

It is an amenable number.

916531201 is a deficient number, since it is larger than the sum of its proper divisors (1).

916531201 is an equidigital number, since it uses as much as digits as its factorization.

916531201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 916531201 is about 30274.2663164609. The cubic root of 916531201 is about 971.3649261554.

The spelling of 916531201 in words is "nine hundred sixteen million, five hundred thirty-one thousand, two hundred one".