45521191 has 2 divisors, whose sum is σ = 45521192. Its totient is φ = 45521190.

The previous prime is 45521171. The next prime is 45521251. The reversal of 45521191 is 19112554.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45521191 - 2²³ = 37132583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45521141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22760595 + 22760596.

It is an arithmetic number, because the mean of its divisors is an integer number (22760596).

Almost surely, 2^45521191 is an apocalyptic number.

45521191 is a deficient number, since it is larger than the sum of its proper divisors (1).

45521191 is an equidigital number, since it uses as much as digits as its factorization.

45521191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1800, while the sum is 28.

The square root of 45521191 is about 6746.9393801931. The cubic root of 45521191 is about 357.0572633966.

The spelling of 45521191 in words is "forty-five million, five hundred twenty-one thousand, one hundred ninety-one".