90522945 has 24 divisors (see below), whose sum is σ = 161970432. Its totient is φ = 46720800.

The previous prime is 90522937. The next prime is 90522947. The reversal of 90522945 is 54922509.

It is a happy number.

90522945 is a `hidden beast` number, since 90 + 522 + 9 + 45 = 666.

It is not a de Polignac number, because 90522945 - 2³ = 90522937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90522947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31051 + ... + 33840.

It is an arithmetic number, because the mean of its divisors is an integer number (6748768).

Almost surely, 2^90522945 is an apocalyptic number.

It is an amenable number.

90522945 is a deficient number, since it is larger than the sum of its proper divisors (71447487).

90522945 is a wasteful number, since it uses less digits than its factorization.

90522945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64933 (or 64930 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 90522945 is about 9514.3546812172. The cubic root of 90522945 is about 449.0067723510.

The spelling of 90522945 in words is "ninety million, five hundred twenty-two thousand, nine hundred forty-five".