45177949 has 2 divisors, whose sum is σ = 45177950. Its totient is φ = 45177948.

The previous prime is 45177887. The next prime is 45177997. The reversal of 45177949 is 94977154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37576900 + 7601049 = 6130^2 + 2757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45177949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 45177899 and 45177908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45177049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22588974 + 22588975.

It is an arithmetic number, because the mean of its divisors is an integer number (22588975).

Almost surely, 2^45177949 is an apocalyptic number.

It is an amenable number.

45177949 is a deficient number, since it is larger than the sum of its proper divisors (1).

45177949 is an equidigital number, since it uses as much as digits as its factorization.

45177949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 46.

The square root of 45177949 is about 6721.4543813077. The cubic root of 45177949 is about 356.1575623922.

It can be divided in two parts, 451 and 77949, that added together give a square (78400 = 280²).

The spelling of 45177949 in words is "forty-five million, one hundred seventy-seven thousand, nine hundred forty-nine".