1275755013 has 24 divisors (see below), whose sum is σ = 2003793792. Its totient is φ = 777450528.

The previous prime is 1275755009. The next prime is 1275755023. The reversal of 1275755013 is 3105575721.

It is a happy number.

1275755013 is a `hidden beast` number, since 1 + 27 + 575 + 50 + 13 = 666.

It is not a de Polignac number, because 1275755013 - 2² = 1275755009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275755023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40881 + ... + 64982.

It is an arithmetic number, because the mean of its divisors is an integer number (83491408).

Almost surely, 2^1275755013 is an apocalyptic number.

1275755013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1275755013 is a deficient number, since it is larger than the sum of its proper divisors (728038779).

1275755013 is a wasteful number, since it uses less digits than its factorization.

1275755013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105985 (or 105982 counting only the distinct ones).

The product of its (nonzero) digits is 36750, while the sum is 36.

The square root of 1275755013 is about 35717.7128747069. The cubic root of 1275755013 is about 1084.5654394582.

The spelling of 1275755013 in words is "one billion, two hundred seventy-five million, seven hundred fifty-five thousand, thirteen".