45023449 has 2 divisors, whose sum is σ = 45023450. Its totient is φ = 45023448.

The previous prime is 45023441. The next prime is 45023467. The reversal of 45023449 is 94432054.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34987225 + 10036224 = 5915^2 + 3168^2 .

It is a cyclic number.

It is not a de Polignac number, because 45023449 - 2³ = 45023441 is a prime.

It is a super-2 number, since 2×45023449² = 4054221919711202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45023449.

It is not a weakly prime, because it can be changed into another prime (45023441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22511724 + 22511725.

It is an arithmetic number, because the mean of its divisors is an integer number (22511725).

Almost surely, 2^45023449 is an apocalyptic number.

It is an amenable number.

45023449 is a deficient number, since it is larger than the sum of its proper divisors (1).

45023449 is an equidigital number, since it uses as much as digits as its factorization.

45023449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 45023449 is about 6709.9514901376. The cubic root of 45023449 is about 355.7511016402.

The spelling of 45023449 in words is "forty-five million, twenty-three thousand, four hundred forty-nine".