80955881 has 2 divisors, whose sum is σ = 80955882. Its totient is φ = 80955880.

The previous prime is 80955877. The next prime is 80955943. The reversal of 80955881 is 18855908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79477225 + 1478656 = 8915^2 + 1216^2 .

It is a cyclic number.

It is not a de Polignac number, because 80955881 - 2² = 80955877 is a prime.

It is a super-2 number, since 2×80955881² = 13107709336972322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80955811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40477940 + 40477941.

It is an arithmetic number, because the mean of its divisors is an integer number (40477941).

Almost surely, 2^80955881 is an apocalyptic number.

It is an amenable number.

80955881 is a deficient number, since it is larger than the sum of its proper divisors (1).

80955881 is an equidigital number, since it uses as much as digits as its factorization.

80955881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 44.

The square root of 80955881 is about 8997.5486105939. The cubic root of 80955881 is about 432.5963005181.

The spelling of 80955881 in words is "eighty million, nine hundred fifty-five thousand, eight hundred eighty-one".