87913537 has 2 divisors, whose sum is σ = 87913538. Its totient is φ = 87913536.

The previous prime is 87913493. The next prime is 87913601. The reversal of 87913537 is 73531978.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86694721 + 1218816 = 9311^2 + 1104^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87913537 is a prime.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 87913493 and 87913502.

It is not a weakly prime, because it can be changed into another prime (87913937) 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 as a sum of consecutive naturals, namely, 43956768 + 43956769.

It is an arithmetic number, because the mean of its divisors is an integer number (43956769).

Almost surely, 2^87913537 is an apocalyptic number.

It is an amenable number.

87913537 is a deficient number, since it is larger than the sum of its proper divisors (1).

87913537 is an equidigital number, since it uses as much as digits as its factorization.

87913537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 43.

The square root of 87913537 is about 9376.2218937054. The cubic root of 87913537 is about 444.6502946269.

The spelling of 87913537 in words is "eighty-seven million, nine hundred thirteen thousand, five hundred thirty-seven".