1151197253 has 4 divisors (see below), whose sum is σ = 1190893740. Its totient is φ = 1111500768.

The previous prime is 1151197249. The next prime is 1151197309. The reversal of 1151197253 is 3527911511.

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 554225764 + 596971489 = 23542^2 + 24433^2 .

It is a cyclic number.

It is not a de Polignac number, because 1151197253 - 2² = 1151197249 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 (1151497253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19848200 + ... + 19848257.

It is an arithmetic number, because the mean of its divisors is an integer number (297723435).

Almost surely, 2^1151197253 is an apocalyptic number.

It is an amenable number.

1151197253 is a deficient number, since it is larger than the sum of its proper divisors (39696487).

1151197253 is an equidigital number, since it uses as much as digits as its factorization.

1151197253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39696486.

The product of its digits is 9450, while the sum is 35.

The square root of 1151197253 is about 33929.2978559828. The cubic root of 1151197253 is about 1048.0530066254.

The spelling of 1151197253 in words is "one billion, one hundred fifty-one million, one hundred ninety-seven thousand, two hundred fifty-three".