90060561 has 12 divisors (see below), whose sum is σ = 131655888. Its totient is φ = 59316504.

The previous prime is 90060547. The next prime is 90060563. The reversal of 90060561 is 16506009.

It is not a de Polignac number, because 90060561 - 2¹⁰ = 90059537 is a prime.

It is a super-2 number, since 2×90060561² = 16221809295269442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90060563) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59535 + ... + 61028.

It is an arithmetic number, because the mean of its divisors is an integer number (10971324).

Almost surely, 2^90060561 is an apocalyptic number.

It is an amenable number.

90060561 is a deficient number, since it is larger than the sum of its proper divisors (41595327).

90060561 is a wasteful number, since it uses less digits than its factorization.

90060561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120652 (or 120649 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 90060561 is about 9490.0242886939. The cubic root of 90060561 is about 448.2409700264.

The spelling of 90060561 in words is "ninety million, sixty thousand, five hundred sixty-one".