90901252 has 24 divisors (see below), whose sum is σ = 171951192. Its totient is φ = 41798400.

The previous prime is 90901249. The next prime is 90901289. The reversal of 90901252 is 25210909.

It can be written as a sum of positive squares in 4 ways, for example, as 4096 + 90897156 = 64^2 + 9534^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 90901252.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11502 + ... + 17722.

It is an arithmetic number, because the mean of its divisors is an integer number (7164633).

Almost surely, 2^90901252 is an apocalyptic number.

It is an amenable number.

90901252 is a deficient number, since it is larger than the sum of its proper divisors (81049940).

90901252 is a wasteful number, since it uses less digits than its factorization.

90901252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6519 (or 6517 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 90901252 is about 9534.2148077333. The cubic root of 90901252 is about 449.6313886745.

The spelling of 90901252 in words is "ninety million, nine hundred one thousand, two hundred fifty-two".