90505452 has 12 divisors (see below), whose sum is σ = 211179416. Its totient is φ = 30168480.

The previous prime is 90505451. The next prime is 90505453. The reversal of 90505452 is 25450509.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90505451) and next prime (90505453).

It is a tau number, because it is divible by the number of its divisors (12).

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

It is not an unprimeable number, because it can be changed into a prime (90505451) 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 3 ways as a sum of consecutive naturals, for example, 3771049 + ... + 3771072.

Almost surely, 2^90505452 is an apocalyptic number.

It is an amenable number.

90505452 is an abundant number, since it is smaller than the sum of its proper divisors (120673964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90505452 is a wasteful number, since it uses less digits than its factorization.

90505452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7542128 (or 7542126 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 90505452 is about 9513.4353416629. The cubic root of 90505452 is about 448.9778478926.

The spelling of 90505452 in words is "ninety million, five hundred five thousand, four hundred fifty-two".