1255497061 has 24 divisors (see below), whose sum is σ = 1615359480. Its totient is φ = 966494592.

The previous prime is 1255497043. The next prime is 1255497071. The reversal of 1255497061 is 1607945521.

It can be written as a sum of positive squares in 4 ways, for example, as 38812900 + 1216684161 = 6230^2 + 34881^2 .

It is not a de Polignac number, because 1255497061 - 2⁷ = 1255496933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255497071) 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 23 ways as a sum of consecutive naturals, for example, 3066 + ... + 50203.

It is an arithmetic number, because the mean of its divisors is an integer number (67306645).

Almost surely, 2^1255497061 is an apocalyptic number.

It is an amenable number.

1255497061 is a deficient number, since it is larger than the sum of its proper divisors (359862419).

1255497061 is a wasteful number, since it uses less digits than its factorization.

1255497061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53333 (or 53326 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 1255497061 is about 35432.9939604319. The cubic root of 1255497061 is about 1078.7941104378.

The spelling of 1255497061 in words is "one billion, two hundred fifty-five million, four hundred ninety-seven thousand, sixty-one".