255477557 has 2 divisors, whose sum is σ = 255477558. Its totient is φ = 255477556.

The previous prime is 255477527. The next prime is 255477619. The reversal of 255477557 is 755774552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245580241 + 9897316 = 15671^2 + 3146^2 .

It is a cyclic number.

It is not a de Polignac number, because 255477557 - 2⁸ = 255477301 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255477517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127738778 + 127738779.

It is an arithmetic number, because the mean of its divisors is an integer number (127738779).

Almost surely, 2^255477557 is an apocalyptic number.

It is an amenable number.

255477557 is a deficient number, since it is larger than the sum of its proper divisors (1).

255477557 is an equidigital number, since it uses as much as digits as its factorization.

255477557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1715000, while the sum is 47.

The square root of 255477557 is about 15983.6653180677. The cubic root of 255477557 is about 634.5281856990.

The spelling of 255477557 in words is "two hundred fifty-five million, four hundred seventy-seven thousand, five hundred fifty-seven".