45047791 has 2 divisors, whose sum is σ = 45047792. Its totient is φ = 45047790.

The previous prime is 45047767. The next prime is 45047797. The reversal of 45047791 is 19774054.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45047791 - 2⁷ = 45047663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45047791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45047797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22523895 + 22523896.

It is an arithmetic number, because the mean of its divisors is an integer number (22523896).

Almost surely, 2^45047791 is an apocalyptic number.

45047791 is a deficient number, since it is larger than the sum of its proper divisors (1).

45047791 is an equidigital number, since it uses as much as digits as its factorization.

45047791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 45047791 is about 6711.7651180595. The cubic root of 45047791 is about 355.8152025576.

The spelling of 45047791 in words is "forty-five million, forty-seven thousand, seven hundred ninety-one".