1255761071 has 4 divisors (see below), whose sum is σ = 1255893912. Its totient is φ = 1255628232.

The previous prime is 1255761029. The next prime is 1255761077. The reversal of 1255761071 is 1701675521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1255761071 - 2⁶ = 1255761007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255761077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51056 + ... + 71541.

It is an arithmetic number, because the mean of its divisors is an integer number (313973478).

Almost surely, 2^1255761071 is an apocalyptic number.

1255761071 is a deficient number, since it is larger than the sum of its proper divisors (132841).

1255761071 is a wasteful number, since it uses less digits than its factorization.

1255761071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132840.

The product of its (nonzero) digits is 14700, while the sum is 35.

The square root of 1255761071 is about 35436.7192471312. The cubic root of 1255761071 is about 1078.8697225813.

The spelling of 1255761071 in words is "one billion, two hundred fifty-five million, seven hundred sixty-one thousand, seventy-one".