90522987 has 16 divisors (see below), whose sum is σ = 123981312. Its totient is φ = 58721760.

The previous prime is 90522961. The next prime is 90522989. The reversal of 90522987 is 78922509.

It is not a de Polignac number, because 90522987 - 2¹⁵ = 90490219 is a prime.

It is a super-2 number, since 2×90522987² = 16388822350804338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90522989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23748 + ... + 27294.

It is an arithmetic number, because the mean of its divisors is an integer number (7748832).

Almost surely, 2^90522987 is an apocalyptic number.

90522987 is a deficient number, since it is larger than the sum of its proper divisors (33458325).

90522987 is a wasteful number, since it uses less digits than its factorization.

90522987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 90522987 is about 9514.3568884082. The cubic root of 90522987 is about 449.0068417930.

The spelling of 90522987 in words is "ninety million, five hundred twenty-two thousand, nine hundred eighty-seven".