255774749 has 4 divisors (see below), whose sum is σ = 257727360. Its totient is φ = 253822140.

The previous prime is 255774733. The next prime is 255774763. The reversal of 255774749 is 947477552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255774749 - 2⁴ = 255774733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255774697 and 255774706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255776749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 976109 + ... + 976370.

It is an arithmetic number, because the mean of its divisors is an integer number (64431840).

Almost surely, 2^255774749 is an apocalyptic number.

It is an amenable number.

255774749 is a deficient number, since it is larger than the sum of its proper divisors (1952611).

255774749 is a wasteful number, since it uses less digits than its factorization.

255774749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952610.

The product of its digits is 2469600, while the sum is 50.

The square root of 255774749 is about 15992.9593571671. The cubic root of 255774749 is about 634.7741350594.

The spelling of 255774749 in words is "two hundred fifty-five million, seven hundred seventy-four thousand, seven hundred forty-nine".