1252953217 has 4 divisors (see below), whose sum is σ = 1253282260. Its totient is φ = 1252624176.

The previous prime is 1252953209. The next prime is 1252953223. The reversal of 1252953217 is 7123592521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1245313521 + 7639696 = 35289^2 + 2764^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252953217 - 2³ = 1252953209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252953287) 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 in 3 ways as a sum of consecutive naturals, for example, 158742 + ... + 166447.

It is an arithmetic number, because the mean of its divisors is an integer number (313320565).

Almost surely, 2^1252953217 is an apocalyptic number.

It is an amenable number.

1252953217 is a deficient number, since it is larger than the sum of its proper divisors (329043).

1252953217 is an equidigital number, since it uses as much as digits as its factorization.

1252953217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329042.

The product of its digits is 37800, while the sum is 37.

The square root of 1252953217 is about 35397.0792156641. The cubic root of 1252953217 is about 1078.0650128937.

The spelling of 1252953217 in words is "one billion, two hundred fifty-two million, nine hundred fifty-three thousand, two hundred seventeen".