1151323254 has 16 divisors (see below), whose sum is σ = 2558496240. Its totient is φ = 383774400.

The previous prime is 1151323253. The next prime is 1151323273. The reversal of 1151323254 is 4523231511.

It is a super-2 number, since 2×1151323254² = 2651090470402297032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151323253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10660347 + ... + 10660454.

It is an arithmetic number, because the mean of its divisors is an integer number (159906015).

Almost surely, 2^1151323254 is an apocalyptic number.

1151323254 is an abundant number, since it is smaller than the sum of its proper divisors (1407172986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1151323254 is a wasteful number, since it uses less digits than its factorization.

1151323254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21320812 (or 21320806 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1151323254 is about 33931.1546222642. The cubic root of 1151323254 is about 1048.0912424444.

Adding to 1151323254 its reverse (4523231511), we get a palindrome (5674554765).

The spelling of 1151323254 in words is "one billion, one hundred fifty-one million, three hundred twenty-three thousand, two hundred fifty-four".