87075257 has 4 divisors (see below), whose sum is σ = 87130596. Its totient is φ = 87019920.

The previous prime is 87075229. The next prime is 87075293. The reversal of 87075257 is 75257078.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55591936 + 31483321 = 7456^2 + 5611^2 .

It is a cyclic number.

It is not a de Polignac number, because 87075257 - 2⁶ = 87075193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87075557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25238 + ... + 28479.

It is an arithmetic number, because the mean of its divisors is an integer number (21782649).

Almost surely, 2^87075257 is an apocalyptic number.

It is an amenable number.

87075257 is a deficient number, since it is larger than the sum of its proper divisors (55339).

87075257 is a wasteful number, since it uses less digits than its factorization.

87075257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55338.

The product of its (nonzero) digits is 137200, while the sum is 41.

The square root of 87075257 is about 9331.4123796990. The cubic root of 87075257 is about 443.2324906156.

The spelling of 87075257 in words is "eighty-seven million, seventy-five thousand, two hundred fifty-seven".