87613051 has 4 divisors (see below), whose sum is σ = 87844600. Its totient is φ = 87381504.

The previous prime is 87613039. The next prime is 87613073. The reversal of 87613051 is 15031678.

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

It is a cyclic number.

It is not a de Polignac number, because 87613051 - 2¹¹ = 87611003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87613451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115206 + ... + 115963.

It is an arithmetic number, because the mean of its divisors is an integer number (21961150).

Almost surely, 2^87613051 is an apocalyptic number.

87613051 is a deficient number, since it is larger than the sum of its proper divisors (231549).

87613051 is a wasteful number, since it uses less digits than its factorization.

87613051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231548.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 87613051 is about 9360.1843464752. The cubic root of 87613051 is about 444.1431156071.

The spelling of 87613051 in words is "eighty-seven million, six hundred thirteen thousand, fifty-one".