45805131 has 6 divisors (see below), whose sum is σ = 66162980. Its totient is φ = 30536748.

The previous prime is 45805129. The next prime is 45805163. The reversal of 45805131 is 13150854.

45805131 is a `hidden beast` number, since 4 + 580 + 51 + 31 = 666.

It is not a de Polignac number, because 45805131 - 2¹ = 45805129 is a prime.

It is a super-2 number, since 2×45805131² = 4196220051854322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45805095 and 45805104.

It is not an unprimeable number, because it can be changed into a prime (45805031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2544721 + ... + 2544738.

Almost surely, 2^45805131 is an apocalyptic number.

45805131 is a deficient number, since it is larger than the sum of its proper divisors (20357849).

45805131 is a wasteful number, since it uses less digits than its factorization.

45805131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5089465 (or 5089462 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 45805131 is about 6767.9488029978. The cubic root of 45805131 is about 357.7981108393.

Adding to 45805131 its reverse (13150854), we get a palindrome (58955985).

The spelling of 45805131 in words is "forty-five million, eight hundred five thousand, one hundred thirty-one".