45890257 has 4 divisors (see below), whose sum is σ = 52446016. Its totient is φ = 39334500.

The previous prime is 45890167. The next prime is 45890281. The reversal of 45890257 is 75209854.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75209854 = 2 ⋅37604927.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45890257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45890287) 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, 3277869 + ... + 3277882.

It is an arithmetic number, because the mean of its divisors is an integer number (13111504).

Almost surely, 2^45890257 is an apocalyptic number.

It is an amenable number.

45890257 is a deficient number, since it is larger than the sum of its proper divisors (6555759).

45890257 is an equidigital number, since it uses as much as digits as its factorization.

45890257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555758.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 45890257 is about 6774.2347907347. The cubic root of 45890257 is about 358.0196222196.

The spelling of 45890257 in words is "forty-five million, eight hundred ninety thousand, two hundred fifty-seven".