1445895557 has 2 divisors, whose sum is σ = 1445895558. Its totient is φ = 1445895556.

The previous prime is 1445895547. The next prime is 1445895569. The reversal of 1445895557 is 7555985441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 790228321 + 655667236 = 28111^2 + 25606^2 .

It is an emirp because it is prime and its reverse (7555985441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1445895557 - 2⁴ = 1445895541 is a prime.

It is a super-2 number, since 2×1445895557² = 4181227923504680498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1445895499 and 1445895508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445895547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722947778 + 722947779.

It is an arithmetic number, because the mean of its divisors is an integer number (722947779).

Almost surely, 2^1445895557 is an apocalyptic number.

It is an amenable number.

1445895557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445895557 is an equidigital number, since it uses as much as digits as its factorization.

1445895557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040000, while the sum is 53.

The square root of 1445895557 is about 38024.9333595734. The cubic root of 1445895557 is about 1130.7822283771.

The spelling of 1445895557 in words is "one billion, four hundred forty-five million, eight hundred ninety-five thousand, five hundred fifty-seven".