1161255753 has 72 divisors (see below), whose sum is σ = 2029936896. Its totient is φ = 637156800.

The previous prime is 1161255727. The next prime is 1161255757. The reversal of 1161255753 is 3575521611.

It is a happy number.

1161255753 is a `hidden beast` number, since 1 + 1 + 61 + 25 + 575 + 3 = 666.

It is not a de Polignac number, because 1161255753 - 2¹⁴ = 1161239369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1161255757) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2364838 + ... + 2365328.

It is an arithmetic number, because the mean of its divisors is an integer number (28193568).

Almost surely, 2^1161255753 is an apocalyptic number.

It is an amenable number.

1161255753 is a deficient number, since it is larger than the sum of its proper divisors (868681143).

1161255753 is a wasteful number, since it uses less digits than its factorization.

1161255753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715 (or 705 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 1161255753 is about 34077.2028341529. The cubic root of 1161255753 is about 1051.0965876922.

The spelling of 1161255753 in words is "one billion, one hundred sixty-one million, two hundred fifty-five thousand, seven hundred fifty-three".