90546553 has 4 divisors (see below), whose sum is σ = 91564020. Its totient is φ = 89529088.

The previous prime is 90546541. The next prime is 90546557. The reversal of 90546553 is 35564509.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54582544 + 35964009 = 7388^2 + 5997^2 .

It is a cyclic number.

It is not a de Polignac number, because 90546553 - 2⁹ = 90546041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90546557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508600 + ... + 508777.

It is an arithmetic number, because the mean of its divisors is an integer number (22891005).

Almost surely, 2^90546553 is an apocalyptic number.

It is an amenable number.

90546553 is a deficient number, since it is larger than the sum of its proper divisors (1017467).

90546553 is a wasteful number, since it uses less digits than its factorization.

90546553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017466.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 90546553 is about 9515.5952520060. The cubic root of 90546553 is about 449.0458019787.

The spelling of 90546553 in words is "ninety million, five hundred forty-six thousand, five hundred fifty-three".