2855477557 has 2 divisors, whose sum is σ = 2855477558. Its totient is φ = 2855477556.

The previous prime is 2855477543. The next prime is 2855477579. The reversal of 2855477557 is 7557745582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2111770116 + 743707441 = 45954^2 + 27271^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2855477557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2855477498 and 2855477507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2855477657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1427738778 + 1427738779.

It is an arithmetic number, because the mean of its divisors is an integer number (1427738779).

Almost surely, 2^2855477557 is an apocalyptic number.

It is an amenable number.

2855477557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2855477557 is an equidigital number, since it uses as much as digits as its factorization.

2855477557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13720000, while the sum is 55.

The square root of 2855477557 is about 53436.6686555216. The cubic root of 2855477557 is about 1418.7076711753.

The spelling of 2855477557 in words is "two billion, eight hundred fifty-five million, four hundred seventy-seven thousand, five hundred fifty-seven".