45444187 has 2 divisors, whose sum is σ = 45444188. Its totient is φ = 45444186.

The previous prime is 45444173. The next prime is 45444199. The reversal of 45444187 is 78144454.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45444187 - 2⁷ = 45444059 is a prime.

It is not a weakly prime, because it can be changed into another prime (45444107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22722093 + 22722094.

It is an arithmetic number, because the mean of its divisors is an integer number (22722094).

Almost surely, 2^45444187 is an apocalyptic number.

45444187 is a deficient number, since it is larger than the sum of its proper divisors (1).

45444187 is an equidigital number, since it uses as much as digits as its factorization.

45444187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 71680, while the sum is 37.

The square root of 45444187 is about 6741.2303773124. The cubic root of 45444187 is about 356.8558161513.

The spelling of 45444187 in words is "forty-five million, four hundred forty-four thousand, one hundred eighty-seven".