1251522053 has 2 divisors, whose sum is σ = 1251522054. Its totient is φ = 1251522052.

The previous prime is 1251522047. The next prime is 1251522067. The reversal of 1251522053 is 3502251521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1158245089 + 93276964 = 34033^2 + 9658^2 .

It is a cyclic number.

It is not a de Polignac number, because 1251522053 - 2²⁴ = 1234744837 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 (1251522653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625761026 + 625761027.

It is an arithmetic number, because the mean of its divisors is an integer number (625761027).

Almost surely, 2^1251522053 is an apocalyptic number.

It is an amenable number.

1251522053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1251522053 is an equidigital number, since it uses as much as digits as its factorization.

1251522053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 1251522053 is about 35376.8575908036. The cubic root of 1251522053 is about 1077.6543895137.

Adding to 1251522053 its reverse (3502251521), we get a palindrome (4753773574).

The spelling of 1251522053 in words is "one billion, two hundred fifty-one million, five hundred twenty-two thousand, fifty-three".