1324251157 has 4 divisors (see below), whose sum is σ = 1369915020. Its totient is φ = 1278587296.

The previous prime is 1324251101. The next prime is 1324251161. The reversal of 1324251157 is 7511524231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 341177841 + 983073316 = 18471^2 + 31354^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1324251157 is a prime.

It is a super-2 number, since 2×1324251157² = 3507282253631677298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1324252157) 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, 22831888 + ... + 22831945.

It is an arithmetic number, because the mean of its divisors is an integer number (342478755).

Almost surely, 2^1324251157 is an apocalyptic number.

It is an amenable number.

1324251157 is a deficient number, since it is larger than the sum of its proper divisors (45663863).

1324251157 is an equidigital number, since it uses as much as digits as its factorization.

1324251157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45663862.

The product of its digits is 8400, while the sum is 31.

The square root of 1324251157 is about 36390.2618429711. The cubic root of 1324251157 is about 1098.1376633820.

Adding to 1324251157 its reverse (7511524231), we get a palindrome (8835775388).

The spelling of 1324251157 in words is "one billion, three hundred twenty-four million, two hundred fifty-one thousand, one hundred fifty-seven".