3145555549 has 2 divisors, whose sum is σ = 3145555550. Its totient is φ = 3145555548.

The previous prime is 3145555537. The next prime is 3145555573. The reversal of 3145555549 is 9455555413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1777887225 + 1367668324 = 42165^2 + 36982^2 .

It is an emirp because it is prime and its reverse (9455555413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3145555549 - 2²³ = 3137166941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3145555499 and 3145555508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3145555519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572777774 + 1572777775.

It is an arithmetic number, because the mean of its divisors is an integer number (1572777775).

Almost surely, 2^3145555549 is an apocalyptic number.

It is an amenable number.

3145555549 is a deficient number, since it is larger than the sum of its proper divisors (1).

3145555549 is an equidigital number, since it uses as much as digits as its factorization.

3145555549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1350000, while the sum is 46.

The square root of 3145555549 is about 56085.2525090152. The cubic root of 3145555549 is about 1465.2074549253.

The spelling of 3145555549 in words is "three billion, one hundred forty-five million, five hundred fifty-five thousand, five hundred forty-nine".