1151242250 has 16 divisors (see below), whose sum is σ = 2155125960. Its totient is φ = 460496800.

The previous prime is 1151242249. The next prime is 1151242291. The reversal of 1151242250 is 522421511.

It can be written as a sum of positive squares in 4 ways, for example, as 100380361 + 1050861889 = 10019^2 + 32417^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2302235 + ... + 2302734.

Almost surely, 2^1151242250 is an apocalyptic number.

1151242250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1151242250 is a deficient number, since it is larger than the sum of its proper divisors (1003883710).

1151242250 is an equidigital number, since it uses as much as digits as its factorization.

1151242250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4604986 (or 4604976 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1151242250 is about 33929.9609489902. The cubic root of 1151242250 is about 1048.0666615765.

Adding to 1151242250 its reverse (522421511), we get a palindrome (1673663761).

The spelling of 1151242250 in words is "one billion, one hundred fifty-one million, two hundred forty-two thousand, two hundred fifty".