45471131 has 4 divisors (see below), whose sum is σ = 45491472. Its totient is φ = 45450792.

The previous prime is 45471119. The next prime is 45471149. The reversal of 45471131 is 13117454.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45471131 is a prime.

It is a super-2 number, since 2×45471131² = 4135247508838322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45471131.

It is not an unprimeable number, because it can be changed into a prime (45471331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6335 + ... + 11448.

It is an arithmetic number, because the mean of its divisors is an integer number (11372868).

Almost surely, 2^45471131 is an apocalyptic number.

45471131 is a deficient number, since it is larger than the sum of its proper divisors (20341).

45471131 is a wasteful number, since it uses less digits than its factorization.

45471131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20340.

The product of its digits is 1680, while the sum is 26.

The square root of 45471131 is about 6743.2285294212. The cubic root of 45471131 is about 356.9263291922.

Adding to 45471131 its reverse (13117454), we get a palindrome (58588585).

The spelling of 45471131 in words is "forty-five million, four hundred seventy-one thousand, one hundred thirty-one".