80892521 has 2 divisors, whose sum is σ = 80892522. Its totient is φ = 80892520.

The previous prime is 80892509. The next prime is 80892529. The reversal of 80892521 is 12529808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66912400 + 13980121 = 8180^2 + 3739^2 .

It is a cyclic number.

It is not a de Polignac number, because 80892521 - 2¹⁴ = 80876137 is a prime.

It is not a weakly prime, because it can be changed into another prime (80892529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40446260 + 40446261.

It is an arithmetic number, because the mean of its divisors is an integer number (40446261).

Almost surely, 2^80892521 is an apocalyptic number.

It is an amenable number.

80892521 is a deficient number, since it is larger than the sum of its proper divisors (1).

80892521 is an equidigital number, since it uses as much as digits as its factorization.

80892521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 80892521 is about 8994.0269623790. The cubic root of 80892521 is about 432.4834141122.

The spelling of 80892521 in words is "eighty million, eight hundred ninety-two thousand, five hundred twenty-one".