1157210017 has 4 divisors (see below), whose sum is σ = 1207523520. Its totient is φ = 1106896516.

The previous prime is 1157209993. The next prime is 1157210053. The reversal of 1157210017 is 7100127511.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7100127511 = 1621 ⋅4380091.

It is a cyclic number.

It is not a de Polignac number, because 1157210017 - 2²³ = 1148821409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1157209973 and 1157210000.

It is not an unprimeable number, because it can be changed into a prime (1157210057) 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, 25156717 + ... + 25156762.

It is an arithmetic number, because the mean of its divisors is an integer number (301880880).

Almost surely, 2^1157210017 is an apocalyptic number.

It is an amenable number.

1157210017 is a deficient number, since it is larger than the sum of its proper divisors (50313503).

1157210017 is an equidigital number, since it uses as much as digits as its factorization.

1157210017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50313502.

The product of its (nonzero) digits is 490, while the sum is 25.

The square root of 1157210017 is about 34017.7897136190. The cubic root of 1157210017 is about 1049.8745177332.

Adding to 1157210017 its reverse (7100127511), we get a palindrome (8257337528).

The spelling of 1157210017 in words is "one billion, one hundred fifty-seven million, two hundred ten thousand, seventeen".