1157072211 has 12 divisors (see below), whose sum is σ = 1679812992. Its totient is φ = 767464656.

The previous prime is 1157072197. The next prime is 1157072221. The reversal of 1157072211 is 1122707511.

1157072211 is a `hidden beast` number, since 1 + 1 + 570 + 72 + 21 + 1 = 666.

It is not a de Polignac number, because 1157072211 - 2⁷ = 1157072083 is a prime.

It is a super-2 number, since 2×1157072211² = 2677632202936857042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1157072221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 324531 + ... + 328076.

It is an arithmetic number, because the mean of its divisors is an integer number (139984416).

Almost surely, 2^1157072211 is an apocalyptic number.

1157072211 is a deficient number, since it is larger than the sum of its proper divisors (522740781).

1157072211 is a wasteful number, since it uses less digits than its factorization.

1157072211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652810 (or 652807 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 27.

The square root of 1157072211 is about 34015.7641542859. The cubic root of 1157072211 is about 1049.8328414172.

Adding to 1157072211 its reverse (1122707511), we get a palindrome (2279779722).

The spelling of 1157072211 in words is "one billion, one hundred fifty-seven million, seventy-two thousand, two hundred eleven".