87016251 has 32 divisors (see below), whose sum is σ = 142414848. Its totient is φ = 46126080.

The previous prime is 87016231. The next prime is 87016253. The reversal of 87016251 is 15261078.

It is not a de Polignac number, because 87016251 - 2⁶ = 87016187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87016253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23631 + ... + 27063.

It is an arithmetic number, because the mean of its divisors is an integer number (4450464).

Almost surely, 2^87016251 is an apocalyptic number.

87016251 is a deficient number, since it is larger than the sum of its proper divisors (55398597).

87016251 is a wasteful number, since it uses less digits than its factorization.

87016251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3531.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 87016251 is about 9328.2501574518. The cubic root of 87016251 is about 443.1323500896.

The spelling of 87016251 in words is "eighty-seven million, sixteen thousand, two hundred fifty-one".