87157477 has 8 divisors (see below), whose sum is σ = 95232672. Its totient is φ = 79107600.

The previous prime is 87157463. The next prime is 87157481. The reversal of 87157477 is 77475178.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87157477 - 2²³ = 78768869 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 (87157177) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278 + ... + 13264.

It is an arithmetic number, because the mean of its divisors is an integer number (11904084).

Almost surely, 2^87157477 is an apocalyptic number.

It is an amenable number.

87157477 is a deficient number, since it is larger than the sum of its proper divisors (8075195).

87157477 is a wasteful number, since it uses less digits than its factorization.

87157477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12659.

The product of its digits is 384160, while the sum is 46.

The square root of 87157477 is about 9335.8168898067. The cubic root of 87157477 is about 443.3719527792.

The spelling of 87157477 in words is "eighty-seven million, one hundred fifty-seven thousand, four hundred seventy-seven".