273642481 has 4 divisors (see below), whose sum is σ = 312734272. Its totient is φ = 234550692.

The previous prime is 273642461. The next prime is 273642493. The reversal of 273642481 is 184246372.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 273642481 - 2⁹ = 273641969 is a prime.

It is a super-2 number, since 2×273642481² = 149760414815670722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 273642481.

It is not an unprimeable number, because it can be changed into a prime (273642461) 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, 19545885 + ... + 19545898.

It is an arithmetic number, because the mean of its divisors is an integer number (78183568).

Almost surely, 2^273642481 is an apocalyptic number.

It is an amenable number.

273642481 is a deficient number, since it is larger than the sum of its proper divisors (39091791).

273642481 is an equidigital number, since it uses as much as digits as its factorization.

273642481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39091790.

The product of its digits is 64512, while the sum is 37.

The square root of 273642481 is about 16542.1425758576. The cubic root of 273642481 is about 649.2239108121.

The spelling of 273642481 in words is "two hundred seventy-three million, six hundred forty-two thousand, four hundred eighty-one".