45451131 has 16 divisors (see below), whose sum is σ = 66236160. Its totient is φ = 27493920.

The previous prime is 45451127. The next prime is 45451163. The reversal of 45451131 is 13115454.

It is a happy number.

It is not a de Polignac number, because 45451131 - 2² = 45451127 is a prime.

It is a super-2 number, since 2×45451131² = 4131610618358322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (45451171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23250 + ... + 25128.

It is an arithmetic number, because the mean of its divisors is an integer number (4139760).

Almost surely, 2^45451131 is an apocalyptic number.

45451131 is a deficient number, since it is larger than the sum of its proper divisors (20785029).

45451131 is a wasteful number, since it uses less digits than its factorization.

45451131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2626.

The product of its digits is 1200, while the sum is 24.

The square root of 45451131 is about 6741.7453971505. The cubic root of 45451131 is about 356.8739914175.

Adding to 45451131 its reverse (13115454), we get a palindrome (58566585).

The spelling of 45451131 in words is "forty-five million, four hundred fifty-one thousand, one hundred thirty-one".