45255557 has 2 divisors, whose sum is σ = 45255558. Its totient is φ = 45255556.

The previous prime is 45255533. The next prime is 45255563. The reversal of 45255557 is 75555254.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42328036 + 2927521 = 6506^2 + 1711^2 .

It is a cyclic number.

It is not a de Polignac number, because 45255557 - 2⁶ = 45255493 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45255557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45255517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22627778 + 22627779.

It is an arithmetic number, because the mean of its divisors is an integer number (22627779).

Almost surely, 2^45255557 is an apocalyptic number.

It is an amenable number.

45255557 is a deficient number, since it is larger than the sum of its proper divisors (1).

45255557 is an equidigital number, since it uses as much as digits as its factorization.

45255557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 175000, while the sum is 38.

The square root of 45255557 is about 6727.2250594134. The cubic root of 45255557 is about 356.3613850128.

The spelling of 45255557 in words is "forty-five million, two hundred fifty-five thousand, five hundred fifty-seven".