45557557 has 2 divisors, whose sum is σ = 45557558. Its totient is φ = 45557556.

The previous prime is 45557543. The next prime is 45557563. The reversal of 45557557 is 75575554.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36108081 + 9449476 = 6009^2 + 3074^2 .

It is a cyclic number.

It is not a de Polignac number, because 45557557 - 2¹¹ = 45555509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45557537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22778778 + 22778779.

It is an arithmetic number, because the mean of its divisors is an integer number (22778779).

Almost surely, 2^45557557 is an apocalyptic number.

It is an amenable number.

45557557 is a deficient number, since it is larger than the sum of its proper divisors (1).

45557557 is an equidigital number, since it uses as much as digits as its factorization.

45557557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612500, while the sum is 43.

The square root of 45557557 is about 6749.6338419206. The cubic root of 45557557 is about 357.1523201378.

The spelling of 45557557 in words is "forty-five million, five hundred fifty-seven thousand, five hundred fifty-seven".