45444331 has 4 divisors (see below), whose sum is σ = 46084464. Its totient is φ = 44804200.

The previous prime is 45444319. The next prime is 45444361. The reversal of 45444331 is 13344454.

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 45444331 - 2¹¹ = 45442283 is a prime.

It is a super-2 number, since 2×45444331² = 4130374440075122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45444331.

It is not an unprimeable number, because it can be changed into a prime (45444361) 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, 319960 + ... + 320101.

It is an arithmetic number, because the mean of its divisors is an integer number (11521116).

Almost surely, 2^45444331 is an apocalyptic number.

45444331 is a deficient number, since it is larger than the sum of its proper divisors (640133).

45444331 is an equidigital number, since it uses as much as digits as its factorization.

45444331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640132.

The product of its digits is 11520, while the sum is 28.

The square root of 45444331 is about 6741.2410578468. The cubic root of 45444331 is about 356.8561930765.

Adding to 45444331 its reverse (13344454), we get a palindrome (58788785).

The spelling of 45444331 in words is "forty-five million, four hundred forty-four thousand, three hundred thirty-one".