87445651 has 2 divisors, whose sum is σ = 87445652. Its totient is φ = 87445650.

The previous prime is 87445613. The next prime is 87445663. The reversal of 87445651 is 15654478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87445651 - 2¹³ = 87437459 is a prime.

It is not a weakly prime, because it can be changed into another prime (87445681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43722825 + 43722826.

It is an arithmetic number, because the mean of its divisors is an integer number (43722826).

Almost surely, 2^87445651 is an apocalyptic number.

87445651 is a deficient number, since it is larger than the sum of its proper divisors (1).

87445651 is an equidigital number, since it uses as much as digits as its factorization.

87445651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 40.

The square root of 87445651 is about 9351.2379394388. The cubic root of 87445651 is about 443.8600643203.

The spelling of 87445651 in words is "eighty-seven million, four hundred forty-five thousand, six hundred fifty-one".