45544155457 has 2 divisors, whose sum is σ = 45544155458. Its totient is φ = 45544155456.

The previous prime is 45544155287. The next prime is 45544155521. The reversal of 45544155457 is 75455144554.

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., 35452747521 + 10091407936 = 188289^2 + 100456^2 .

It is a cyclic number.

It is not a de Polignac number, because 45544155457 - 2²³ = 45535766849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45544155457.

It is not a weakly prime, because it can be changed into another prime (45544155557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22772077728 + 22772077729.

It is an arithmetic number, because the mean of its divisors is an integer number (22772077729).

Almost surely, 2^45544155457 is an apocalyptic number.

It is an amenable number.

45544155457 is a deficient number, since it is larger than the sum of its proper divisors (1).

45544155457 is an equidigital number, since it uses as much as digits as its factorization.

45544155457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5600000, while the sum is 49.

The spelling of 45544155457 in words is "forty-five billion, five hundred forty-four million, one hundred fifty-five thousand, four hundred fifty-seven".