1253324155 has 4 divisors (see below), whose sum is σ = 1503988992. Its totient is φ = 1002659320.

The previous prime is 1253324147. The next prime is 1253324159. The reversal of 1253324155 is 5514233521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5514233521 = 461 ⋅11961461.

It is not a de Polignac number, because 1253324155 - 2³ = 1253324147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253324159) 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 3 ways as a sum of consecutive naturals, for example, 125332411 + ... + 125332420.

It is an arithmetic number, because the mean of its divisors is an integer number (375997248).

Almost surely, 2^1253324155 is an apocalyptic number.

1253324155 is a deficient number, since it is larger than the sum of its proper divisors (250664837).

1253324155 is an equidigital number, since it uses as much as digits as its factorization.

1253324155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250664836.

The product of its digits is 18000, while the sum is 31.

The square root of 1253324155 is about 35402.3184975222. The cubic root of 1253324155 is about 1078.1713897899.

Adding to 1253324155 its reverse (5514233521), we get a palindrome (6767557676).

The spelling of 1253324155 in words is "one billion, two hundred fifty-three million, three hundred twenty-four thousand, one hundred fifty-five".