90331061 has 4 divisors (see below), whose sum is σ = 90381312. Its totient is φ = 90280812.

The previous prime is 90331037. The next prime is 90331093. The reversal of 90331061 is 16013309.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90331061 - 2²⁶ = 23222197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90336061) 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, 22325 + ... + 26058.

It is an arithmetic number, because the mean of its divisors is an integer number (22595328).

Almost surely, 2^90331061 is an apocalyptic number.

It is an amenable number.

90331061 is a deficient number, since it is larger than the sum of its proper divisors (50251).

90331061 is a wasteful number, since it uses less digits than its factorization.

90331061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50250.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 90331061 is about 9504.2654108563. The cubic root of 90331061 is about 448.6892905461.

The spelling of 90331061 in words is "ninety million, three hundred thirty-one thousand, sixty-one".