86977251 has 12 divisors (see below), whose sum is σ = 125890128. Its totient is φ = 57866544.

The previous prime is 86977249. The next prime is 86977271. The reversal of 86977251 is 15277968.

It is not a de Polignac number, because 86977251 - 2¹ = 86977249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86977197 and 86977206.

It is not an unprimeable number, because it can be changed into a prime (86977211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5080 + ... + 14133.

It is an arithmetic number, because the mean of its divisors is an integer number (10490844).

Almost surely, 2^86977251 is an apocalyptic number.

86977251 is a deficient number, since it is larger than the sum of its proper divisors (38912877).

86977251 is a wasteful number, since it uses less digits than its factorization.

86977251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19722 (or 19719 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 86977251 is about 9326.1594989578. The cubic root of 86977251 is about 443.0661373841.

The spelling of 86977251 in words is "eighty-six million, nine hundred seventy-seven thousand, two hundred fifty-one".