275221473 has 8 divisors (see below), whose sum is σ = 382916928. Its totient is φ = 175503504.

The previous prime is 275221469. The next prime is 275221481. The reversal of 275221473 is 374122572.

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

It is not a de Polignac number, because 275221473 - 2² = 275221469 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (275221423) 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, 1994290 + ... + 1994427.

It is an arithmetic number, because the mean of its divisors is an integer number (47864616).

Almost surely, 2^275221473 is an apocalyptic number.

275221473 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

275221473 is a deficient number, since it is larger than the sum of its proper divisors (107695455).

275221473 is a wasteful number, since it uses less digits than its factorization.

275221473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3988743.

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

The square root of 275221473 is about 16589.8002700454. The cubic root of 275221473 is about 650.4702498485.

The spelling of 275221473 in words is "two hundred seventy-five million, two hundred twenty-one thousand, four hundred seventy-three".