1157226297 has 4 divisors (see below), whose sum is σ = 1542968400. Its totient is φ = 771484196.

The previous prime is 1157226269. The next prime is 1157226299. The reversal of 1157226297 is 7926227511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1157226297 - 2⁶ = 1157226233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1157226299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192871047 + ... + 192871052.

It is an arithmetic number, because the mean of its divisors is an integer number (385742100).

Almost surely, 2^1157226297 is an apocalyptic number.

It is an amenable number.

1157226297 is a deficient number, since it is larger than the sum of its proper divisors (385742103).

1157226297 is an equidigital number, since it uses as much as digits as its factorization.

1157226297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385742102.

The product of its digits is 105840, while the sum is 42.

The square root of 1157226297 is about 34018.0289993409. The cubic root of 1157226297 is about 1049.8794410335.

The spelling of 1157226297 in words is "one billion, one hundred fifty-seven million, two hundred twenty-six thousand, two hundred ninety-seven".