90254531 has 4 divisors (see below), whose sum is σ = 90304200. Its totient is φ = 90204864.

The previous prime is 90254501. The next prime is 90254537. The reversal of 90254531 is 13545209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13545209 = 17 ⋅796777.

It is a cyclic number.

It is not a de Polignac number, because 90254531 - 2¹⁰ = 90253507 is a prime.

It is a super-2 number, since 2×90254531² = 16291760732059922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90254494 and 90254503.

It is not an unprimeable number, because it can be changed into a prime (90254537) 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, 22001 + ... + 25778.

It is an arithmetic number, because the mean of its divisors is an integer number (22576050).

Almost surely, 2^90254531 is an apocalyptic number.

90254531 is a deficient number, since it is larger than the sum of its proper divisors (49669).

90254531 is a wasteful number, since it uses less digits than its factorization.

90254531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49668.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 90254531 is about 9500.2384706911. The cubic root of 90254531 is about 448.5625423641.

The spelling of 90254531 in words is "ninety million, two hundred fifty-four thousand, five hundred thirty-one".