87033510257 has 4 divisors (see below), whose sum is σ = 87059014260. Its totient is φ = 87008006256.

The previous prime is 87033510253. The next prime is 87033510281. The reversal of 87033510257 is 75201533078.

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 80949354256 + 6084156001 = 284516^2 + 78001^2 .

It is a cyclic number.

It is not a de Polignac number, because 87033510257 - 2² = 87033510253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87033510253) 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 3 ways as a sum of consecutive naturals, for example, 12746882 + ... + 12753707.

It is an arithmetic number, because the mean of its divisors is an integer number (21764753565).

Almost surely, 2^87033510257 is an apocalyptic number.

It is an amenable number.

87033510257 is a deficient number, since it is larger than the sum of its proper divisors (25504003).

87033510257 is a wasteful number, since it uses less digits than its factorization.

87033510257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25504002.

The product of its (nonzero) digits is 176400, while the sum is 41.

The spelling of 87033510257 in words is "eighty-seven billion, thirty-three million, five hundred ten thousand, two hundred fifty-seven".