87161051 has 8 divisors (see below), whose sum is σ = 88558464. Its totient is φ = 85769280.

The previous prime is 87161047. The next prime is 87161069. The reversal of 87161051 is 15016178.

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 87161051 - 2² = 87161047 is a prime.

It is a super-2 number, since 2×87161051² = 15194097622849202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87161021) 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, 38390 + ... + 40596.

It is an arithmetic number, because the mean of its divisors is an integer number (11069808).

Almost surely, 2^87161051 is an apocalyptic number.

87161051 is a deficient number, since it is larger than the sum of its proper divisors (1397413).

87161051 is a wasteful number, since it uses less digits than its factorization.

87161051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821.

The product of its (nonzero) digits is 1680, while the sum is 29.

The square root of 87161051 is about 9336.0083011960. The cubic root of 87161051 is about 443.3780130345.

The spelling of 87161051 in words is "eighty-seven million, one hundred sixty-one thousand, fifty-one".