87042275 has 6 divisors (see below), whose sum is σ = 107932452. Its totient is φ = 69633800.

The previous prime is 87042269. The next prime is 87042299. The reversal of 87042275 is 57224078.

It is not a de Polignac number, because 87042275 - 2⁴ = 87042259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1740821 + ... + 1740870.

It is an arithmetic number, because the mean of its divisors is an integer number (17988742).

Almost surely, 2^87042275 is an apocalyptic number.

87042275 is a deficient number, since it is larger than the sum of its proper divisors (20890177).

87042275 is a wasteful number, since it uses less digits than its factorization.

87042275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481701 (or 3481696 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 87042275 is about 9329.6449557312. The cubic root of 87042275 is about 443.1765216349.

The spelling of 87042275 in words is "eighty-seven million, forty-two thousand, two hundred seventy-five".