87235523 has 2 divisors, whose sum is σ = 87235524. Its totient is φ = 87235522.

The previous prime is 87235487. The next prime is 87235537. The reversal of 87235523 is 32553278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87235523 - 2⁶ = 87235459 is a prime.

It is a super-2 number, since 2×87235523² = 15220072946167058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87235543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43617761 + 43617762.

It is an arithmetic number, because the mean of its divisors is an integer number (43617762).

Almost surely, 2^87235523 is an apocalyptic number.

87235523 is a deficient number, since it is larger than the sum of its proper divisors (1).

87235523 is an equidigital number, since it uses as much as digits as its factorization.

87235523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 35.

The square root of 87235523 is about 9339.9958779434. The cubic root of 87235523 is about 443.5042538550.

The spelling of 87235523 in words is "eighty-seven million, two hundred thirty-five thousand, five hundred twenty-three".