45316778 has 16 divisors (see below), whose sum is σ = 74406696. Its totient is φ = 20571840.

The previous prime is 45316769. The next prime is 45316783. The reversal of 45316778 is 87761354.

It can be written as a sum of positive squares in 4 ways, for example, as 4190209 + 41126569 = 2047^2 + 6413^2 .

It is a super-2 number, since 2×45316778² = 4107220736602568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12701 + ... + 15872.

Almost surely, 2^45316778 is an apocalyptic number.

45316778 is a deficient number, since it is larger than the sum of its proper divisors (29089918).

45316778 is a wasteful number, since it uses less digits than its factorization.

45316778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28649.

The product of its digits is 141120, while the sum is 41.

The square root of 45316778 is about 6731.7737632811. The cubic root of 45316778 is about 356.5220059499.

The spelling of 45316778 in words is "forty-five million, three hundred sixteen thousand, seven hundred seventy-eight".