1157255203 has 32 divisors (see below), whose sum is σ = 1318123520. Its totient is φ = 1008702720.

The previous prime is 1157255191. The next prime is 1157255233. The reversal of 1157255203 is 3025527511.

It is a cyclic number.

It is not a de Polignac number, because 1157255203 - 2⁵ = 1157255171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157255233) 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 31 ways as a sum of consecutive naturals, for example, 4089100 + ... + 4089382.

It is an arithmetic number, because the mean of its divisors is an integer number (41191360).

Almost surely, 2^1157255203 is an apocalyptic number.

1157255203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1157255203 is a deficient number, since it is larger than the sum of its proper divisors (160868317).

1157255203 is a wasteful number, since it uses less digits than its factorization.

1157255203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 1157255203 is about 34018.4538596333. The cubic root of 1157255203 is about 1049.8881824993. Note that the first 3 decimals are identical.

The spelling of 1157255203 in words is "one billion, one hundred fifty-seven million, two hundred fifty-five thousand, two hundred three".