87211157 has 8 divisors (see below), whose sum is σ = 95467680. Its totient is φ = 79009360.

The previous prime is 87211133. The next prime is 87211169. The reversal of 87211157 is 75111278.

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

It is a cyclic number.

It is not a de Polignac number, because 87211157 - 2²⁰ = 86162581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87213157) 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, 10307 + ... + 16752.

It is an arithmetic number, because the mean of its divisors is an integer number (11933460).

Almost surely, 2^87211157 is an apocalyptic number.

It is an amenable number.

87211157 is a deficient number, since it is larger than the sum of its proper divisors (8256523).

87211157 is a wasteful number, since it uses less digits than its factorization.

87211157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27363.

The product of its digits is 3920, while the sum is 32.

The square root of 87211157 is about 9338.6913965502. The cubic root of 87211157 is about 443.4629578685.

The spelling of 87211157 in words is "eighty-seven million, two hundred eleven thousand, one hundred fifty-seven".