80951377 has 4 divisors (see below), whose sum is σ = 87178420. Its totient is φ = 74724336.

The previous prime is 80951359. The next prime is 80951393. The reversal of 80951377 is 77315908.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9024016 + 71927361 = 3004^2 + 8481^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80951377 is a prime.

It is a super-2 number, since 2×80951377² = 13106250876392258, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (80951317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3113502 + ... + 3113527.

It is an arithmetic number, because the mean of its divisors is an integer number (21794605).

Almost surely, 2^80951377 is an apocalyptic number.

It is an amenable number.

80951377 is a deficient number, since it is larger than the sum of its proper divisors (6227043).

80951377 is a wasteful number, since it uses less digits than its factorization.

80951377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6227042.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 80951377 is about 8997.2983167171. The cubic root of 80951377 is about 432.5882778361.

The spelling of 80951377 in words is "eighty million, nine hundred fifty-one thousand, three hundred seventy-seven".