87393057 has 4 divisors (see below), whose sum is σ = 116524080. Its totient is φ = 58262036.

The previous prime is 87393049. The next prime is 87393079. The reversal of 87393057 is 75039378.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87393057 - 2³ = 87393049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87395057) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14565507 + ... + 14565512.

It is an arithmetic number, because the mean of its divisors is an integer number (29131020).

Almost surely, 2^87393057 is an apocalyptic number.

It is an amenable number.

87393057 is a deficient number, since it is larger than the sum of its proper divisors (29131023).

87393057 is a wasteful number, since it uses less digits than its factorization.

87393057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29131022.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 87393057 is about 9348.4253754309. The cubic root of 87393057 is about 443.7710602449.

The spelling of 87393057 in words is "eighty-seven million, three hundred ninety-three thousand, fifty-seven".