255771479 has 2 divisors, whose sum is σ = 255771480. Its totient is φ = 255771478.

The previous prime is 255771403. The next prime is 255771499. The reversal of 255771479 is 974177552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255771479 - 2¹⁶ = 255705943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255771499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127885739 + 127885740.

It is an arithmetic number, because the mean of its divisors is an integer number (127885740).

Almost surely, 2^255771479 is an apocalyptic number.

255771479 is a deficient number, since it is larger than the sum of its proper divisors (1).

255771479 is an equidigital number, since it uses as much as digits as its factorization.

255771479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 617400, while the sum is 47.

The square root of 255771479 is about 15992.8571243540. The cubic root of 255771479 is about 634.7714299184.

The spelling of 255771479 in words is "two hundred fifty-five million, seven hundred seventy-one thousand, four hundred seventy-nine".