45075757 has 2 divisors, whose sum is σ = 45075758. Its totient is φ = 45075756.

The previous prime is 45075749. The next prime is 45075781. The reversal of 45075757 is 75757054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40627876 + 4447881 = 6374^2 + 2109^2 .

It is a cyclic number.

It is not a de Polignac number, because 45075757 - 2³ = 45075749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45075727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22537878 + 22537879.

It is an arithmetic number, because the mean of its divisors is an integer number (22537879).

Almost surely, 2^45075757 is an apocalyptic number.

It is an amenable number.

45075757 is a deficient number, since it is larger than the sum of its proper divisors (1).

45075757 is an equidigital number, since it uses as much as digits as its factorization.

45075757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 171500, while the sum is 40.

The square root of 45075757 is about 6713.8481513957. The cubic root of 45075757 is about 355.8888182243. Note that the first 4 decimals are identical.

The spelling of 45075757 in words is "forty-five million, seventy-five thousand, seven hundred fifty-seven".