90220252 has 6 divisors (see below), whose sum is σ = 157885448. Its totient is φ = 45110124.

The previous prime is 90220243. The next prime is 90220259. The reversal of 90220252 is 25202209.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90220259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11277528 + ... + 11277535.

Almost surely, 2^90220252 is an apocalyptic number.

It is an amenable number.

90220252 is a deficient number, since it is larger than the sum of its proper divisors (67665196).

90220252 is a wasteful number, since it uses less digits than its factorization.

90220252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22555067 (or 22555065 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 90220252 is about 9498.4341867489. The cubic root of 90220252 is about 448.5057466100.

The spelling of 90220252 in words is "ninety million, two hundred twenty thousand, two hundred fifty-two".