87015755 has 4 divisors (see below), whose sum is σ = 104418912. Its totient is φ = 69612600.

The previous prime is 87015743. The next prime is 87015769. The reversal of 87015755 is 55751078.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55751078 = 2 ⋅27875539.

It is not a de Polignac number, because 87015755 - 2²² = 82821451 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8701571 + ... + 8701580.

It is an arithmetic number, because the mean of its divisors is an integer number (26104728).

Almost surely, 2^87015755 is an apocalyptic number.

87015755 is a deficient number, since it is larger than the sum of its proper divisors (17403157).

87015755 is a wasteful number, since it uses less digits than its factorization.

87015755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17403156.

The product of its (nonzero) digits is 49000, while the sum is 38.

The square root of 87015755 is about 9328.2235715060. The cubic root of 87015755 is about 443.1315081240.

The spelling of 87015755 in words is "eighty-seven million, fifteen thousand, seven hundred fifty-five".