275223981 has 8 divisors (see below), whose sum is σ = 367671744. Its totient is φ = 183129440.

The previous prime is 275223959. The next prime is 275223989. The reversal of 275223981 is 189322572.

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

It is a cyclic number.

It is not a de Polignac number, because 275223981 - 2⁶ = 275223917 is a prime.

It is a super-2 number, since 2×275223981² = 151496479434976722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275223989) 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, 86481 + ... + 89606.

It is an arithmetic number, because the mean of its divisors is an integer number (45958968).

Almost surely, 2^275223981 is an apocalyptic number.

It is an amenable number.

275223981 is a deficient number, since it is larger than the sum of its proper divisors (92447763).

275223981 is a wasteful number, since it uses less digits than its factorization.

275223981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176611.

The product of its digits is 60480, while the sum is 39.

The square root of 275223981 is about 16589.8758584867. The cubic root of 275223981 is about 650.4722256808.

The spelling of 275223981 in words is "two hundred seventy-five million, two hundred twenty-three thousand, nine hundred eighty-one".