45115391 has 2 divisors, whose sum is σ = 45115392. Its totient is φ = 45115390.

The previous prime is 45115319. The next prime is 45115409. The reversal of 45115391 is 19351154.

Together with previous prime (45115319) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45115391 - 2¹⁸ = 44853247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45105391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22557695 + 22557696.

It is an arithmetic number, because the mean of its divisors is an integer number (22557696).

Almost surely, 2^45115391 is an apocalyptic number.

45115391 is a deficient number, since it is larger than the sum of its proper divisors (1).

45115391 is an equidigital number, since it uses as much as digits as its factorization.

45115391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2700, while the sum is 29.

The square root of 45115391 is about 6716.7991632920. The cubic root of 45115391 is about 355.9930957505.

The spelling of 45115391 in words is "forty-five million, one hundred fifteen thousand, three hundred ninety-one".