90080257 has 4 divisors (see below), whose sum is σ = 90454276. Its totient is φ = 89706240.

The previous prime is 90080251. The next prime is 90080269. The reversal of 90080257 is 75208009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75208009 = 2113 ⋅35593.

It can be written as a sum of positive squares in 2 ways, for example, as 49617936 + 40462321 = 7044^2 + 6361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90080257 is a prime.

It is a super-2 number, since 2×90080257² = 16228905402372098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90080251) 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, 186648 + ... + 187129.

It is an arithmetic number, because the mean of its divisors is an integer number (22613569).

Almost surely, 2^90080257 is an apocalyptic number.

It is an amenable number.

90080257 is a deficient number, since it is larger than the sum of its proper divisors (374019).

90080257 is a wasteful number, since it uses less digits than its factorization.

90080257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374018.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 90080257 is about 9491.0619532274. The cubic root of 90080257 is about 448.2736440054.

The spelling of 90080257 in words is "ninety million, eighty thousand, two hundred fifty-seven".