90527861 has 4 divisors (see below), whose sum is σ = 91070112. Its totient is φ = 89985612.

The previous prime is 90527849. The next prime is 90527867. The reversal of 90527861 is 16872509.

90527861 = T₃₃₃ + T₃₃₄ + ... + T₈₃₃.

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 not a de Polignac number, because 90527861 - 2⁶ = 90527797 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 (90527867) 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, 270875 + ... + 271208.

It is an arithmetic number, because the mean of its divisors is an integer number (22767528).

Almost surely, 2^90527861 is an apocalyptic number.

It is an amenable number.

90527861 is a deficient number, since it is larger than the sum of its proper divisors (542251).

90527861 is a wasteful number, since it uses less digits than its factorization.

90527861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542250.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 90527861 is about 9514.6130241855. The cubic root of 90527861 is about 449.0149002253.

The spelling of 90527861 in words is "ninety million, five hundred twenty-seven thousand, eight hundred sixty-one".