1521147253 has 2 divisors, whose sum is σ = 1521147254. Its totient is φ = 1521147252.

The previous prime is 1521147193. The next prime is 1521147259. The reversal of 1521147253 is 3527411251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1265722929 + 255424324 = 35577^2 + 15982^2 .

It is a cyclic number.

It is not a de Polignac number, because 1521147253 - 2¹⁷ = 1521016181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1521147259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760573626 + 760573627.

It is an arithmetic number, because the mean of its divisors is an integer number (760573627).

Almost surely, 2^1521147253 is an apocalyptic number.

It is an amenable number.

1521147253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521147253 is an equidigital number, since it uses as much as digits as its factorization.

1521147253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8400, while the sum is 31.

The square root of 1521147253 is about 39001.8878132841. The cubic root of 1521147253 is about 1150.0686166997.

The spelling of 1521147253 in words is "one billion, five hundred twenty-one million, one hundred forty-seven thousand, two hundred fifty-three".