87915451 has 8 divisors (see below), whose sum is σ = 99661520. Its totient is φ = 76881312.

The previous prime is 87915431. The next prime is 87915479. The reversal of 87915451 is 15451978.

It is a happy number.

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 87915451 - 2⁵ = 87915419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87915431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177720 + ... + 178213.

It is an arithmetic number, because the mean of its divisors is an integer number (12457690).

Almost surely, 2^87915451 is an apocalyptic number.

87915451 is a deficient number, since it is larger than the sum of its proper divisors (11746069).

87915451 is a wasteful number, since it uses less digits than its factorization.

87915451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355965.

The product of its digits is 50400, while the sum is 40.

The square root of 87915451 is about 9376.3239598470. The cubic root of 87915451 is about 444.6535214887.

The spelling of 87915451 in words is "eighty-seven million, nine hundred fifteen thousand, four hundred fifty-one".