1252660061 has 2 divisors, whose sum is σ = 1252660062. Its totient is φ = 1252660060.

The previous prime is 1252660051. The next prime is 1252660067. The reversal of 1252660061 is 1600662521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1250683225 + 1976836 = 35365^2 + 1406^2 .

It is an emirp because it is prime and its reverse (1600662521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1252660061 - 2¹⁴ = 1252643677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252660067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626330030 + 626330031.

It is an arithmetic number, because the mean of its divisors is an integer number (626330031).

Almost surely, 2^1252660061 is an apocalyptic number.

It is an amenable number.

1252660061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252660061 is an equidigital number, since it uses as much as digits as its factorization.

1252660061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1252660061 is about 35392.9380102867. The cubic root of 1252660061 is about 1077.9809273178.

The spelling of 1252660061 in words is "one billion, two hundred fifty-two million, six hundred sixty thousand, sixty-one".