90881523 has 6 divisors (see below), whose sum is σ = 131273324. Its totient is φ = 60587676.

The previous prime is 90881513. The next prime is 90881573. The reversal of 90881523 is 32518809.

It is not a de Polignac number, because 90881523 - 2¹⁶ = 90815987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90881513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5048965 + ... + 5048982.

Almost surely, 2^90881523 is an apocalyptic number.

90881523 is a deficient number, since it is larger than the sum of its proper divisors (40391801).

90881523 is a wasteful number, since it uses less digits than its factorization.

90881523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10097953 (or 10097950 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 90881523 is about 9533.1801094913. The cubic root of 90881523 is about 449.5988573312.

The spelling of 90881523 in words is "ninety million, eight hundred eighty-one thousand, five hundred twenty-three".