45313778 has 8 divisors (see below), whose sum is σ = 68030172. Its totient is φ = 22637056.

The previous prime is 45313777. The next prime is 45313831. The reversal of 45313778 is 87731354.

It can be written as a sum of positive squares in 2 ways, for example, as 42994249 + 2319529 = 6557^2 + 1523^2 .

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

It is not an unprimeable number, because it can be changed into a prime (45313771) 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, 6875 + ... + 11742.

Almost surely, 2^45313778 is an apocalyptic number.

45313778 is a deficient number, since it is larger than the sum of its proper divisors (22716394).

45313778 is a wasteful number, since it uses less digits than its factorization.

45313778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19836.

The product of its digits is 70560, while the sum is 38.

The square root of 45313778 is about 6731.5509357057. The cubic root of 45313778 is about 356.5141384472.

The spelling of 45313778 in words is "forty-five million, three hundred thirteen thousand, seven hundred seventy-eight".