45513331 has 4 divisors (see below), whose sum is σ = 45955312. Its totient is φ = 45071352.

The previous prime is 45513329. The next prime is 45513337. The reversal of 45513331 is 13331554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13331554 = 2 ⋅6665777.

It is a cyclic number.

It is not a de Polignac number, because 45513331 - 2¹ = 45513329 is a prime.

It is a super-2 number, since 2×45513331² = 4142926597431122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45513296 and 45513305.

It is not an unprimeable number, because it can be changed into a prime (45513337) 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, 220836 + ... + 221041.

It is an arithmetic number, because the mean of its divisors is an integer number (11488828).

Almost surely, 2^45513331 is an apocalyptic number.

45513331 is a deficient number, since it is larger than the sum of its proper divisors (441981).

45513331 is a wasteful number, since it uses less digits than its factorization.

45513331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441980.

The product of its digits is 2700, while the sum is 25.

The square root of 45513331 is about 6746.3568687107. The cubic root of 45513331 is about 357.0367115644.

Adding to 45513331 its reverse (13331554), we get a palindrome (58844885).

The spelling of 45513331 in words is "forty-five million, five hundred thirteen thousand, three hundred thirty-one".