45072779 has 2 divisors, whose sum is σ = 45072780. Its totient is φ = 45072778.

The previous prime is 45072773. The next prime is 45072793. The reversal of 45072779 is 97727054.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 45072779 - 2⁸ = 45072523 is a prime.

It is not a weakly prime, because it can be changed into another prime (45072773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22536389 + 22536390.

It is an arithmetic number, because the mean of its divisors is an integer number (22536390).

Almost surely, 2^45072779 is an apocalyptic number.

45072779 is a deficient number, since it is larger than the sum of its proper divisors (1).

45072779 is an equidigital number, since it uses as much as digits as its factorization.

45072779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 45072779 is about 6713.6263673219. The cubic root of 45072779 is about 355.8809806022.

The spelling of 45072779 in words is "forty-five million, seventy-two thousand, seven hundred seventy-nine".