45402231 has 16 divisors (see below), whose sum is σ = 69479168. Its totient is φ = 25833600.

The previous prime is 45402209. The next prime is 45402241. The reversal of 45402231 is 13220454.

It is not a de Polignac number, because 45402231 - 2⁷ = 45402103 is a prime.

It is a super-2 number, since 2×45402231² = 4122725159554722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45402198 and 45402207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45402241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 576 + ... + 9546.

It is an arithmetic number, because the mean of its divisors is an integer number (4342448).

Almost surely, 2^45402231 is an apocalyptic number.

45402231 is a deficient number, since it is larger than the sum of its proper divisors (24076937).

45402231 is a wasteful number, since it uses less digits than its factorization.

45402231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9222.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 45402231 is about 6738.1177638863. The cubic root of 45402231 is about 356.7459608640.

Adding to 45402231 its reverse (13220454), we get a palindrome (58622685).

The spelling of 45402231 in words is "forty-five million, four hundred two thousand, two hundred thirty-one".