87351137 has 4 divisors (see below), whose sum is σ = 87374100. Its totient is φ = 87328176.

The previous prime is 87351133. The next prime is 87351167. The reversal of 87351137 is 73115378.

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 45373696 + 41977441 = 6736^2 + 6479^2 .

It is a cyclic number.

It is not a de Polignac number, because 87351137 - 2² = 87351133 is a prime.

It is a super-2 number, since 2×87351137² = 15260442270385538, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87351097 and 87351106.

It is not an unprimeable number, because it can be changed into a prime (87351133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4262 + ... + 13887.

It is an arithmetic number, because the mean of its divisors is an integer number (21843525).

Almost surely, 2^87351137 is an apocalyptic number.

It is an amenable number.

87351137 is a deficient number, since it is larger than the sum of its proper divisors (22963).

87351137 is a wasteful number, since it uses less digits than its factorization.

87351137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22962.

The product of its digits is 17640, while the sum is 35.

The square root of 87351137 is about 9346.1830176816. The cubic root of 87351137 is about 443.7000940503.

The spelling of 87351137 in words is "eighty-seven million, three hundred fifty-one thousand, one hundred thirty-seven".