45553131 has 32 divisors (see below), whose sum is σ = 73120320. Its totient is φ = 27862272.

The previous prime is 45553117. The next prime is 45553159. The reversal of 45553131 is 13135554.

It is a de Polignac number, because none of the positive numbers 2^k-45553131 is a prime.

It is a super-2 number, since 2×45553131² = 4150175487806322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 45553095 and 45553104.

It is not an unprimeable number, because it can be changed into a prime (45553231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81505 + ... + 82061.

It is an arithmetic number, because the mean of its divisors is an integer number (2285010).

Almost surely, 2^45553131 is an apocalyptic number.

45553131 is a deficient number, since it is larger than the sum of its proper divisors (27567189).

45553131 is a wasteful number, since it uses less digits than its factorization.

45553131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 806 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 45553131 is about 6749.3059643196. The cubic root of 45553131 is about 357.1407537629.

Adding to 45553131 its reverse (13135554), we get a palindrome (58688685).

The spelling of 45553131 in words is "forty-five million, five hundred fifty-three thousand, one hundred thirty-one".