1217862053 has 2 divisors, whose sum is σ = 1217862054. Its totient is φ = 1217862052.

The previous prime is 1217862049. The next prime is 1217862059. The reversal of 1217862053 is 3502687121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1124797444 + 93064609 = 33538^2 + 9647^2 .

It is an emirp because it is prime and its reverse (3502687121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1217862053 - 2² = 1217862049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1217862059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608931026 + 608931027.

It is an arithmetic number, because the mean of its divisors is an integer number (608931027).

Almost surely, 2^1217862053 is an apocalyptic number.

It is an amenable number.

1217862053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217862053 is an equidigital number, since it uses as much as digits as its factorization.

1217862053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1217862053 is about 34897.8803511044. The cubic root of 1217862053 is about 1067.9051958121.

The spelling of 1217862053 in words is "one billion, two hundred seventeen million, eight hundred sixty-two thousand, fifty-three".