84520901 has 2 divisors, whose sum is σ = 84520902. Its totient is φ = 84520900.

The previous prime is 84520867. The next prime is 84520907. The reversal of 84520901 is 10902548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61230625 + 23290276 = 7825^2 + 4826^2 .

It is a cyclic number.

It is not a de Polignac number, because 84520901 - 2¹⁴ = 84504517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84520907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42260450 + 42260451.

It is an arithmetic number, because the mean of its divisors is an integer number (42260451).

Almost surely, 2^84520901 is an apocalyptic number.

It is an amenable number.

84520901 is a deficient number, since it is larger than the sum of its proper divisors (1).

84520901 is an equidigital number, since it uses as much as digits as its factorization.

84520901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 84520901 is about 9193.5249496589. The cubic root of 84520901 is about 438.8553252927.

The spelling of 84520901 in words is "eighty-four million, five hundred twenty thousand, nine hundred one".