90814557 has 16 divisors (see below), whose sum is σ = 126678528. Its totient is φ = 57760560.

The previous prime is 90814553. The next prime is 90814651. The reversal of 90814557 is 75541809.

It is not a de Polignac number, because 90814557 - 2² = 90814553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90814553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29082 + ... + 32052.

It is an arithmetic number, because the mean of its divisors is an integer number (7917408).

Almost surely, 2^90814557 is an apocalyptic number.

It is an amenable number.

90814557 is a deficient number, since it is larger than the sum of its proper divisors (35863971).

90814557 is a wasteful number, since it uses less digits than its factorization.

90814557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 90814557 is about 9529.6672030035. The cubic root of 90814557 is about 449.4884013071.

The spelling of 90814557 in words is "ninety million, eight hundred fourteen thousand, five hundred fifty-seven".