45987431 has 12 divisors (see below), whose sum is σ = 56643408. Its totient is φ = 37098432.

The previous prime is 45987413. The next prime is 45987437. The reversal of 45987431 is 13478954.

It is not a de Polignac number, because 45987431 - 2²² = 41793127 is a prime.

It is a super-2 number, since 2×45987431² = 4229687619959522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45987437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26771 + ... + 28436.

It is an arithmetic number, because the mean of its divisors is an integer number (4720284).

Almost surely, 2^45987431 is an apocalyptic number.

45987431 is a deficient number, since it is larger than the sum of its proper divisors (10655977).

45987431 is a wasteful number, since it uses less digits than its factorization.

45987431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55238 (or 55231 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 45987431 is about 6781.4033208474. The cubic root of 45987431 is about 358.2721498327.

The spelling of 45987431 in words is "forty-five million, nine hundred eighty-seven thousand, four hundred thirty-one".