45219458 has 4 divisors (see below), whose sum is σ = 67829190. Its totient is φ = 22609728.

The previous prime is 45219457. The next prime is 45219467. The reversal of 45219458 is 85491254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85491254 = 2 ⋅42745627.

It can be written as a sum of positive squares in only one way, i.e., 26183689 + 19035769 = 5117^2 + 4363^2 .

It is not an unprimeable number, because it can be changed into a prime (45219451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11304863 + ... + 11304866.

Almost surely, 2^45219458 is an apocalyptic number.

45219458 is a deficient number, since it is larger than the sum of its proper divisors (22609732).

45219458 is a wasteful number, since it uses less digits than its factorization.

45219458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22609731.

The product of its digits is 57600, while the sum is 38.

The square root of 45219458 is about 6724.5414713570. The cubic root of 45219458 is about 356.2666068795.

The spelling of 45219458 in words is "forty-five million, two hundred nineteen thousand, four hundred fifty-eight".