45074781 has 24 divisors (see below), whose sum is σ = 66306240. Its totient is φ = 29503296.

The previous prime is 45074773. The next prime is 45074789. The reversal of 45074781 is 18747054.

It is an interprime number because it is at equal distance from previous prime (45074773) and next prime (45074789).

It is not a de Polignac number, because 45074781 - 2³ = 45074773 is a prime.

It is a super-2 number, since 2×45074781² = 4063471764395922, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45074789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171256 + ... + 171518.

It is an arithmetic number, because the mean of its divisors is an integer number (2762760).

Almost surely, 2^45074781 is an apocalyptic number.

It is an amenable number.

45074781 is a deficient number, since it is larger than the sum of its proper divisors (21231459).

45074781 is a wasteful number, since it uses less digits than its factorization.

45074781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 45074781 is about 6713.7754654144. The cubic root of 45074781 is about 355.8862495856.

The spelling of 45074781 in words is "forty-five million, seventy-four thousand, seven hundred eighty-one".