45078431 has 12 divisors (see below), whose sum is σ = 47896272. Its totient is φ = 42418944.

The previous prime is 45078409. The next prime is 45078443. The reversal of 45078431 is 13487054.

It is not a de Polignac number, because 45078431 - 2¹⁴ = 45062047 is a prime.

It is a super-2 number, since 2×45078431² = 4064129882843522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45078401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69350 + ... + 69996.

It is an arithmetic number, because the mean of its divisors is an integer number (3991356).

Almost surely, 2^45078431 is an apocalyptic number.

45078431 is a deficient number, since it is larger than the sum of its proper divisors (2817841).

45078431 is a wasteful number, since it uses less digits than its factorization.

45078431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 45078431 is about 6714.0472890798. The cubic root of 45078431 is about 355.8958554726.

The spelling of 45078431 in words is "forty-five million, seventy-eight thousand, four hundred thirty-one".