90052681 has 4 divisors (see below), whose sum is σ = 90075664. Its totient is φ = 90029700.

The previous prime is 90052673. The next prime is 90052691. The reversal of 90052681 is 18625009.

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 90052681 - 2³ = 90052673 is a prime.

It is a super-2 number, since 2×90052681² = 16218970710575522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90052691) 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, 3975 + ... + 13996.

It is an arithmetic number, because the mean of its divisors is an integer number (22518916).

Almost surely, 2^90052681 is an apocalyptic number.

It is an amenable number.

90052681 is a deficient number, since it is larger than the sum of its proper divisors (22983).

90052681 is a wasteful number, since it uses less digits than its factorization.

90052681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22982.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 90052681 is about 9489.6091068073. The cubic root of 90052681 is about 448.2278964464.

The spelling of 90052681 in words is "ninety million, fifty-two thousand, six hundred eighty-one".