87152971 has 4 divisors (see below), whose sum is σ = 88630200. Its totient is φ = 85675744.

The previous prime is 87152953. The next prime is 87152987. The reversal of 87152971 is 17925178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87152971 - 2⁷ = 87152843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87152071) 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, 738526 + ... + 738643.

It is an arithmetic number, because the mean of its divisors is an integer number (22157550).

Almost surely, 2^87152971 is an apocalyptic number.

87152971 is a deficient number, since it is larger than the sum of its proper divisors (1477229).

87152971 is a wasteful number, since it uses less digits than its factorization.

87152971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477228.

The product of its digits is 35280, while the sum is 40.

The square root of 87152971 is about 9335.5755580468. The cubic root of 87152971 is about 443.3643119413.

The spelling of 87152971 in words is "eighty-seven million, one hundred fifty-two thousand, nine hundred seventy-one".