45515131 has 4 divisors (see below), whose sum is σ = 45532152. Its totient is φ = 45498112.

The previous prime is 45515117. The next prime is 45515167. The reversal of 45515131 is 13151554.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 45515131 - 2⁷ = 45515003 is a prime.

It is a super-3 number, since 3×45515131³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45515096 and 45515105.

It is not an unprimeable number, because it can be changed into a prime (45515101) 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, 3526 + ... + 10171.

It is an arithmetic number, because the mean of its divisors is an integer number (11383038).

Almost surely, 2^45515131 is an apocalyptic number.

45515131 is a deficient number, since it is larger than the sum of its proper divisors (17021).

45515131 is a wasteful number, since it uses less digits than its factorization.

45515131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17020.

The product of its digits is 1500, while the sum is 25.

The square root of 45515131 is about 6746.4902727270. The cubic root of 45515131 is about 357.0414182998.

Adding to 45515131 its reverse (13151554), we get a palindrome (58666685).

The spelling of 45515131 in words is "forty-five million, five hundred fifteen thousand, one hundred thirty-one".