1247517053 has 2 divisors, whose sum is σ = 1247517054. Its totient is φ = 1247517052.

The previous prime is 1247517017. The next prime is 1247517059. The reversal of 1247517053 is 3507157421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1164379129 + 83137924 = 34123^2 + 9118^2 .

It is an emirp because it is prime and its reverse (3507157421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1247517053 - 2²² = 1243322749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1247517059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623758526 + 623758527.

It is an arithmetic number, because the mean of its divisors is an integer number (623758527).

Almost surely, 2^1247517053 is an apocalyptic number.

It is an amenable number.

1247517053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247517053 is an equidigital number, since it uses as much as digits as its factorization.

1247517053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 1247517053 is about 35320.2074314407. The cubic root of 1247517053 is about 1076.5036259533.

The spelling of 1247517053 in words is "one billion, two hundred forty-seven million, five hundred seventeen thousand, fifty-three".