45503131 has 12 divisors (see below), whose sum is σ = 48241872. Its totient is φ = 42838224.

The previous prime is 45503123. The next prime is 45503149. The reversal of 45503131 is 13130554.

It is a happy number.

It is not a de Polignac number, because 45503131 - 2³ = 45503123 is a prime.

It is a super-2 number, since 2×45503131² = 4141069861606322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45503111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143385 + ... + 143701.

It is an arithmetic number, because the mean of its divisors is an integer number (4020156).

Almost surely, 2^45503131 is an apocalyptic number.

45503131 is a deficient number, since it is larger than the sum of its proper divisors (2738741).

45503131 is an equidigital number, since it uses as much as digits as its factorization.

45503131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 45503131 is about 6745.6008627846. The cubic root of 45503131 is about 357.0100377199.

Adding to 45503131 its reverse (13130554), we get a palindrome (58633685).

The spelling of 45503131 in words is "forty-five million, five hundred three thousand, one hundred thirty-one".