253771969 has 6 divisors (see below), whose sum is σ = 278939570. Its totient is φ = 230701680.

The previous prime is 253771951. The next prime is 253771979. The reversal of 253771969 is 969177352.

It can be written as a sum of positive squares in only one way, i.e., 162817600 + 90954369 = 12760^2 + 9537^2 .

It is not a de Polignac number, because 253771969 - 2¹¹ = 253769921 is a prime.

It is a super-2 number, since 2×253771969² = 128800424500273922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253771909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1048524 + ... + 1048765.

Almost surely, 2^253771969 is an apocalyptic number.

It is an amenable number.

253771969 is a deficient number, since it is larger than the sum of its proper divisors (25167601).

253771969 is a wasteful number, since it uses less digits than its factorization.

253771969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097311 (or 2097300 counting only the distinct ones).

The product of its digits is 714420, while the sum is 49.

The square root of 253771969 is about 15930.2218754166. The cubic root of 253771969 is about 633.1129785274.

The spelling of 253771969 in words is "two hundred fifty-three million, seven hundred seventy-one thousand, nine hundred sixty-nine".