253860071 has 4 divisors (see below), whose sum is σ = 260721192. Its totient is φ = 246998952.

The previous prime is 253860043. The next prime is 253860077. The reversal of 253860071 is 170068352.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253860071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253860077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3430505 + ... + 3430578.

It is an arithmetic number, because the mean of its divisors is an integer number (65180298).

Almost surely, 2^253860071 is an apocalyptic number.

253860071 is a deficient number, since it is larger than the sum of its proper divisors (6861121).

253860071 is an equidigital number, since it uses as much as digits as its factorization.

253860071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6861120.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 253860071 is about 15932.9868825654. The cubic root of 253860071 is about 633.1862359826.

The spelling of 253860071 in words is "two hundred fifty-three million, eight hundred sixty thousand, seventy-one".