90120553 has 16 divisors (see below), whose sum is σ = 102168000. Its totient is φ = 78976512.

The previous prime is 90120539. The next prime is 90120557. The reversal of 90120553 is 35502109.

It is a cyclic number.

It is not a de Polignac number, because 90120553 - 2⁵ = 90120521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90120557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16693 + ... + 21421.

It is an arithmetic number, because the mean of its divisors is an integer number (6385500).

Almost surely, 2^90120553 is an apocalyptic number.

It is an amenable number.

90120553 is a deficient number, since it is larger than the sum of its proper divisors (12047447).

90120553 is a wasteful number, since it uses less digits than its factorization.

90120553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4824.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 90120553 is about 9493.1845552480. The cubic root of 90120553 is about 448.3404767852.

The spelling of 90120553 in words is "ninety million, one hundred twenty thousand, five hundred fifty-three".