90057745 has 8 divisors (see below), whose sum is σ = 108695016. Its totient is φ = 71629056.

The previous prime is 90057743. The next prime is 90057757. The reversal of 90057745 is 54775009.

It can be written as a sum of positive squares in 4 ways, for example, as 13162384 + 76895361 = 3628^2 + 8769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90057745 - 2¹ = 90057743 is a prime.

It is a super-2 number, since 2×90057745² = 16220794868970050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90057743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51192 + ... + 52921.

It is an arithmetic number, because the mean of its divisors is an integer number (13586877).

Almost surely, 2^90057745 is an apocalyptic number.

It is an amenable number.

90057745 is a deficient number, since it is larger than the sum of its proper divisors (18637271).

90057745 is a wasteful number, since it uses less digits than its factorization.

90057745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104291.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 90057745 is about 9489.8759212120. The cubic root of 90057745 is about 448.2362981341.

The spelling of 90057745 in words is "ninety million, fifty-seven thousand, seven hundred forty-five".