45180346 has 4 divisors (see below), whose sum is σ = 67770522. Its totient is φ = 22590172.

The previous prime is 45180341. The next prime is 45180379. The reversal of 45180346 is 64308154.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64308154 = 2 ⋅32154077.

It can be written as a sum of positive squares in only one way, i.e., 38875225 + 6305121 = 6235^2 + 2511^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (45180341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11295085 + ... + 11295088.

Almost surely, 2^45180346 is an apocalyptic number.

45180346 is a deficient number, since it is larger than the sum of its proper divisors (22590176).

45180346 is a wasteful number, since it uses less digits than its factorization.

45180346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22590175.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 45180346 is about 6721.6326885661. The cubic root of 45180346 is about 356.1638611478.

The spelling of 45180346 in words is "forty-five million, one hundred eighty thousand, three hundred forty-six".