1252733551 has 2 divisors, whose sum is σ = 1252733552. Its totient is φ = 1252733550.

The previous prime is 1252733549. The next prime is 1252733567. The reversal of 1252733551 is 1553372521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1252733551 - 2¹ = 1252733549 is a prime.

Together with 1252733549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252733351) 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 as a sum of consecutive naturals, namely, 626366775 + 626366776.

It is an arithmetic number, because the mean of its divisors is an integer number (626366776).

Almost surely, 2^1252733551 is an apocalyptic number.

1252733551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252733551 is an equidigital number, since it uses as much as digits as its factorization.

1252733551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31500, while the sum is 34.

The square root of 1252733551 is about 35393.9761965225. The cubic root of 1252733551 is about 1078.0020075964.

The spelling of 1252733551 in words is "one billion, two hundred fifty-two million, seven hundred thirty-three thousand, five hundred fifty-one".