1155703253 has 8 divisors (see below), whose sum is σ = 1219571520. Its totient is φ = 1092139200.

The previous prime is 1155703249. The next prime is 1155703261. The reversal of 1155703253 is 3523075511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1155703253 - 2² = 1155703249 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 (1155703243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68225 + ... + 83462.

It is an arithmetic number, because the mean of its divisors is an integer number (152446440).

Almost surely, 2^1155703253 is an apocalyptic number.

It is an amenable number.

1155703253 is a deficient number, since it is larger than the sum of its proper divisors (63868267).

1155703253 is a wasteful number, since it uses less digits than its factorization.

1155703253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152107.

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 1155703253 is about 33995.6357934368. The cubic root of 1155703253 is about 1049.4186511268.

Adding to 1155703253 its reverse (3523075511), we get a palindrome (4678778764).

The spelling of 1155703253 in words is "one billion, one hundred fifty-five million, seven hundred three thousand, two hundred fifty-three".