45511391 has 2 divisors, whose sum is σ = 45511392. Its totient is φ = 45511390.

The previous prime is 45511387. The next prime is 45511399. The reversal of 45511391 is 19311554.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45511391 - 2² = 45511387 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 (45511399) 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, 22755695 + 22755696.

It is an arithmetic number, because the mean of its divisors is an integer number (22755696).

Almost surely, 2^45511391 is an apocalyptic number.

45511391 is a deficient number, since it is larger than the sum of its proper divisors (1).

45511391 is an equidigital number, since it uses as much as digits as its factorization.

45511391 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 45511391 is about 6746.2130858727. The cubic root of 45511391 is about 357.0316386107.

The spelling of 45511391 in words is "forty-five million, five hundred eleven thousand, three hundred ninety-one".