45672749 has 2 divisors, whose sum is σ = 45672750. Its totient is φ = 45672748.

The previous prime is 45672721. The next prime is 45672769. The reversal of 45672749 is 94727654.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44983849 + 688900 = 6707^2 + 830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45672749 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45672719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22836374 + 22836375.

It is an arithmetic number, because the mean of its divisors is an integer number (22836375).

Almost surely, 2^45672749 is an apocalyptic number.

It is an amenable number.

45672749 is a deficient number, since it is larger than the sum of its proper divisors (1).

45672749 is an equidigital number, since it uses as much as digits as its factorization.

45672749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 44.

The square root of 45672749 is about 6758.1616583210. The cubic root of 45672749 is about 357.4530859266.

The spelling of 45672749 in words is "forty-five million, six hundred seventy-two thousand, seven hundred forty-nine".