7280261 has 4 divisors (see below), whose sum is σ = 7293132. Its totient is φ = 7267392.

The previous prime is 7280197. The next prime is 7280263. The reversal of 7280261 is 1620827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1620827 = 13 ⋅124679.

It can be written as a sum of positive squares in 2 ways, for example, as 2307361 + 4972900 = 1519^2 + 2230^2 .

It is a cyclic number.

It is not a de Polignac number, because 7280261 - 2⁶ = 7280197 is a prime.

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 7280261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7280263) 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, 5546 + ... + 6731.

It is an arithmetic number, because the mean of its divisors is an integer number (1823283).

Almost surely, 2^7280261 is an apocalyptic number.

It is an amenable number.

7280261 is a deficient number, since it is larger than the sum of its proper divisors (12871).

7280261 is a wasteful number, since it uses less digits than its factorization.

7280261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12870.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 7280261 is about 2698.1958787308. The cubic root of 7280261 is about 193.8127377820.

The spelling of 7280261 in words is "seven million, two hundred eighty thousand, two hundred sixty-one".