45431791 has 2 divisors, whose sum is σ = 45431792. Its totient is φ = 45431790.

The previous prime is 45431761. The next prime is 45431797. The reversal of 45431791 is 19713454.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45431791 - 2¹¹ = 45429743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45431797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22715895 + 22715896.

It is an arithmetic number, because the mean of its divisors is an integer number (22715896).

Almost surely, 2^45431791 is an apocalyptic number.

45431791 is a deficient number, since it is larger than the sum of its proper divisors (1).

45431791 is an equidigital number, since it uses as much as digits as its factorization.

45431791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 34.

The square root of 45431791 is about 6740.3108978741. The cubic root of 45431791 is about 356.8233661853.

The spelling of 45431791 in words is "forty-five million, four hundred thirty-one thousand, seven hundred ninety-one".