80131157 has 4 divisors (see below), whose sum is σ = 80669100. Its totient is φ = 79593216.

The previous prime is 80131153. The next prime is 80131199. The reversal of 80131157 is 75113108.

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 28879876 + 51251281 = 5374^2 + 7159^2 .

It is a cyclic number.

It is not a de Polignac number, because 80131157 - 2² = 80131153 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80131153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268748 + ... + 269045.

It is an arithmetic number, because the mean of its divisors is an integer number (20167275).

Almost surely, 2^80131157 is an apocalyptic number.

It is an amenable number.

80131157 is a deficient number, since it is larger than the sum of its proper divisors (537943).

80131157 is a wasteful number, since it uses less digits than its factorization.

80131157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537942.

The product of its (nonzero) digits is 840, while the sum is 26.

The square root of 80131157 is about 8951.6008065597. The cubic root of 80131157 is about 431.1222837652.

The spelling of 80131157 in words is "eighty million, one hundred thirty-one thousand, one hundred fifty-seven".