80951701 has 4 divisors (see below), whose sum is σ = 80983404. Its totient is φ = 80920000.

The previous prime is 80951699. The next prime is 80951711. The reversal of 80951701 is 10715908.

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 69056100 + 11895601 = 8310^2 + 3449^2 .

It is a cyclic number.

It is not a de Polignac number, because 80951701 - 2¹ = 80951699 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80951711) 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, 11650 + ... + 17251.

It is an arithmetic number, because the mean of its divisors is an integer number (20245851).

Almost surely, 2^80951701 is an apocalyptic number.

It is an amenable number.

80951701 is a deficient number, since it is larger than the sum of its proper divisors (31703).

80951701 is a wasteful number, since it uses less digits than its factorization.

80951701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31702.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 80951701 is about 8997.3163221041. The cubic root of 80951701 is about 432.5888549661.

The spelling of 80951701 in words is "eighty million, nine hundred fifty-one thousand, seven hundred one".