7265731 has 4 divisors (see below), whose sum is σ = 7926264. Its totient is φ = 6605200.

The previous prime is 7265729. The next prime is 7265759. The reversal of 7265731 is 1375627.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7265731 - 2¹ = 7265729 is a prime.

It is a super-2 number, since 2×7265731² = 105581693928722, which contains 22 as substring.

It is a Duffinian number.

7265731 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7265693 and 7265702.

It is not an unprimeable number, because it can be changed into a prime (7265701) 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, 330250 + ... + 330271.

It is an arithmetic number, because the mean of its divisors is an integer number (1981566).

Almost surely, 2^7265731 is an apocalyptic number.

7265731 is a deficient number, since it is larger than the sum of its proper divisors (660533).

7265731 is a wasteful number, since it uses less digits than its factorization.

7265731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660532.

The product of its digits is 8820, while the sum is 31.

The square root of 7265731 is about 2695.5019940634. The cubic root of 7265731 is about 193.6837142656.

The spelling of 7265731 in words is "seven million, two hundred sixty-five thousand, seven hundred thirty-one".