275721423 has 8 divisors (see below), whose sum is σ = 374565168. Its totient is φ = 180345984.

The previous prime is 275721349. The next prime is 275721427. The reversal of 275721423 is 324127572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 275721423 - 2⁸ = 275721167 is a prime.

It is a super-2 number, since 2×275721423² = 152044606202289858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275721427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 866890 + ... + 867207.

It is an arithmetic number, because the mean of its divisors is an integer number (46820646).

Almost surely, 2^275721423 is an apocalyptic number.

275721423 is a deficient number, since it is larger than the sum of its proper divisors (98843745).

275721423 is a wasteful number, since it uses less digits than its factorization.

275721423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734153.

The product of its digits is 23520, while the sum is 33.

The square root of 275721423 is about 16604.8614267027. The cubic root of 275721423 is about 650.8638793645.

Adding to 275721423 its reverse (324127572), we get a palindrome (599848995).

The spelling of 275721423 in words is "two hundred seventy-five million, seven hundred twenty-one thousand, four hundred twenty-three".