1052217197 has 4 divisors (see below), whose sum is σ = 1053600636. Its totient is φ = 1050833760.

The previous prime is 1052217191. The next prime is 1052217209. The reversal of 1052217197 is 7917122501.

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 281266441 + 770950756 = 16771^2 + 27766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1052217197 is a prime.

It is a super-2 number, since 2×1052217197² = 2214322059325073618, 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 (1052217191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 690578 + ... + 692099.

It is an arithmetic number, because the mean of its divisors is an integer number (263400159).

Almost surely, 2^1052217197 is an apocalyptic number.

It is an amenable number.

1052217197 is a deficient number, since it is larger than the sum of its proper divisors (1383439).

1052217197 is an equidigital number, since it uses as much as digits as its factorization.

1052217197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383438.

The product of its (nonzero) digits is 8820, while the sum is 35.

The square root of 1052217197 is about 32437.8975428433. The cubic root of 1052217197 is about 1017.1112668465. Note that the first 3 decimals are identical.

Adding to 1052217197 its reverse (7917122501), we get a palindrome (8969339698).

The spelling of 1052217197 in words is "one billion, fifty-two million, two hundred seventeen thousand, one hundred ninety-seven".