45857290 has 8 divisors (see below), whose sum is σ = 82543140. Its totient is φ = 18342912.

The previous prime is 45857257. The next prime is 45857293. The reversal of 45857290 is 9275854.

It can be written as a sum of positive squares in 2 ways, for example, as 39652209 + 6205081 = 6297^2 + 2491^2 .

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

It is a super-2 number, since 2×45857290² = 4205782092288200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45857293) 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, 2292855 + ... + 2292874.

Almost surely, 2^45857290 is an apocalyptic number.

45857290 is a deficient number, since it is larger than the sum of its proper divisors (36685850).

45857290 is a wasteful number, since it uses less digits than its factorization.

45857290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4585736.

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

The square root of 45857290 is about 6771.8010898136. The cubic root of 45857290 is about 357.9338693742.

The spelling of 45857290 in words is "forty-five million, eight hundred fifty-seven thousand, two hundred ninety".