87418523 has 2 divisors, whose sum is σ = 87418524. Its totient is φ = 87418522.

The previous prime is 87418493. The next prime is 87418547. The reversal of 87418523 is 32581478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87418523 - 2⁶ = 87418459 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (87418223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43709261 + 43709262.

It is an arithmetic number, because the mean of its divisors is an integer number (43709262).

Almost surely, 2^87418523 is an apocalyptic number.

87418523 is a deficient number, since it is larger than the sum of its proper divisors (1).

87418523 is an equidigital number, since it uses as much as digits as its factorization.

87418523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 53760, while the sum is 38.

The square root of 87418523 is about 9349.7873237844. The cubic root of 87418523 is about 443.8141604510.

The spelling of 87418523 in words is "eighty-seven million, four hundred eighteen thousand, five hundred twenty-three".