1161552653 has 4 divisors (see below), whose sum is σ = 1161769308. Its totient is φ = 1161336000.

The previous prime is 1161552649. The next prime is 1161552661. The reversal of 1161552653 is 3562551611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1127482084 + 34070569 = 33578^2 + 5837^2 .

It is a cyclic number.

It is not a de Polignac number, because 1161552653 - 2² = 1161552649 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 (1161552683) 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, 100076 + ... + 111077.

It is an arithmetic number, because the mean of its divisors is an integer number (290442327).

Almost surely, 2^1161552653 is an apocalyptic number.

It is an amenable number.

1161552653 is a deficient number, since it is larger than the sum of its proper divisors (216655).

1161552653 is an equidigital number, since it uses as much as digits as its factorization.

1161552653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216654.

The product of its digits is 27000, while the sum is 35.

The square root of 1161552653 is about 34081.5588405225. The cubic root of 1161552653 is about 1051.1861585394.

The spelling of 1161552653 in words is "one billion, one hundred sixty-one million, five hundred fifty-two thousand, six hundred fifty-three".