45013331 has 24 divisors (see below), whose sum is σ = 53242560. Its totient is φ = 37889280.

The previous prime is 45013327. The next prime is 45013363. The reversal of 45013331 is 13331054.

It is a happy number.

It is not a de Polignac number, because 45013331 - 2² = 45013327 is a prime.

It is a super-2 number, since 2×45013331² = 4052399935431122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45013301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162365 + ... + 162641.

It is an arithmetic number, because the mean of its divisors is an integer number (2218440).

Almost surely, 2^45013331 is an apocalyptic number.

45013331 is a deficient number, since it is larger than the sum of its proper divisors (8229229).

45013331 is a wasteful number, since it uses less digits than its factorization.

45013331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 45013331 is about 6709.1974929942. The cubic root of 45013331 is about 355.7244506439.

Adding to 45013331 its reverse (13331054), we get a palindrome (58344385).

The spelling of 45013331 in words is "forty-five million, thirteen thousand, three hundred thirty-one".