45331291 has 2 divisors, whose sum is σ = 45331292. Its totient is φ = 45331290.

The previous prime is 45331277. The next prime is 45331303. The reversal of 45331291 is 19213354.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45331291 - 2¹¹ = 45329243 is a prime.

It is not a weakly prime, because it can be changed into another prime (45331241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22665645 + 22665646.

It is an arithmetic number, because the mean of its divisors is an integer number (22665646).

Almost surely, 2^45331291 is an apocalyptic number.

45331291 is a deficient number, since it is larger than the sum of its proper divisors (1).

45331291 is an equidigital number, since it uses as much as digits as its factorization.

45331291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 28.

The square root of 45331291 is about 6732.8516246833. The cubic root of 45331291 is about 356.5600614034.

The spelling of 45331291 in words is "forty-five million, three hundred thirty-one thousand, two hundred ninety-one".