273261 has 8 divisors (see below), whose sum is σ = 369280. Its totient is φ = 179712.

The previous prime is 273253. The next prime is 273269. The reversal of 273261 is 162372.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (273253) and next prime (273269).

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

It is not a de Polignac number, because 273261 - 2³ = 273253 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

273261 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 273261.

It is not an unprimeable number, because it can be changed into a prime (273269) 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, 340 + ... + 813.

It is an arithmetic number, because the mean of its divisors is an integer number (46160).

2²⁷³²⁶¹ is an apocalyptic number.

It is an amenable number.

273261 is a deficient number, since it is larger than the sum of its proper divisors (96019).

273261 is a wasteful number, since it uses less digits than its factorization.

273261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235.

The product of its digits is 504, while the sum is 21.

The square root of 273261 is about 522.7437230613. The cubic root of 273261 is about 64.8922079307.

Subtracting from 273261 its reverse (162372), we obtain a square (110889 = 333²).

It can be divided in two parts, 273 and 261, that multiplied together give a triangular number (71253 = T₃₇₇).

The spelling of 273261 in words is "two hundred seventy-three thousand, two hundred sixty-one".