45366778 has 16 divisors (see below), whose sum is σ = 72256104. Its totient is φ = 21288960.

The previous prime is 45366767. The next prime is 45366779. The reversal of 45366778 is 87766354.

It can be written as a sum of positive squares in 4 ways, for example, as 45333289 + 33489 = 6733^2 + 183^2 .

It is a super-2 number, since 2×45366778² = 4116289092202568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45366779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11818 + ... + 15178.

Almost surely, 2^45366778 is an apocalyptic number.

45366778 is a deficient number, since it is larger than the sum of its proper divisors (26889326).

45366778 is a wasteful number, since it uses less digits than its factorization.

45366778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777.

The product of its digits is 846720, while the sum is 46.

The square root of 45366778 is about 6735.4864709240. The cubic root of 45366778 is about 356.6530799067.

The spelling of 45366778 in words is "forty-five million, three hundred sixty-six thousand, seven hundred seventy-eight".