45492290 has 8 divisors (see below), whose sum is σ = 81886140. Its totient is φ = 18196912.

The previous prime is 45492259. The next prime is 45492299. The reversal of 45492290 is 9229454.

It can be written as a sum of positive squares in 2 ways, for example, as 44262409 + 1229881 = 6653^2 + 1109^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 45492290.

It is not an unprimeable number, because it can be changed into a prime (45492299) 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, 2274605 + ... + 2274624.

Almost surely, 2^45492290 is an apocalyptic number.

45492290 is a deficient number, since it is larger than the sum of its proper divisors (36393850).

45492290 is a wasteful number, since it uses less digits than its factorization.

45492290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549236.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 45492290 is about 6744.7972541804. The cubic root of 45492290 is about 356.9816832372.

The spelling of 45492290 in words is "forty-five million, four hundred ninety-two thousand, two hundred ninety".