87151515 has 16 divisors (see below), whose sum is σ = 152119296. Its totient is φ = 42255200.

The previous prime is 87151511. The next prime is 87151517. The reversal of 87151515 is 51515178.

It is not a de Polignac number, because 87151515 - 2² = 87151511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (87151511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263931 + ... + 264260.

It is an arithmetic number, because the mean of its divisors is an integer number (9507456).

Almost surely, 2^87151515 is an apocalyptic number.

87151515 is a deficient number, since it is larger than the sum of its proper divisors (64967781).

87151515 is a wasteful number, since it uses less digits than its factorization.

87151515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528210.

The product of its digits is 7000, while the sum is 33.

The square root of 87151515 is about 9335.4975764552. The cubic root of 87151515 is about 443.3618429414.

The spelling of 87151515 in words is "eighty-seven million, one hundred fifty-one thousand, five hundred fifteen".