7272491 has 2 divisors, whose sum is σ = 7272492. Its totient is φ = 7272490.

The previous prime is 7272449. The next prime is 7272493. The reversal of 7272491 is 1942727.

It is a strong prime.

It is an emirp because it is prime and its reverse (1942727) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7272491 - 2⁶ = 7272427 is a prime.

Together with 7272493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7272493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3636245 + 3636246.

It is an arithmetic number, because the mean of its divisors is an integer number (3636246).

Almost surely, 2^7272491 is an apocalyptic number.

7272491 is a deficient number, since it is larger than the sum of its proper divisors (1).

7272491 is an equidigital number, since it uses as much as digits as its factorization.

7272491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 32.

The square root of 7272491 is about 2696.7556433611. The cubic root of 7272491 is about 193.7437631013.

The spelling of 7272491 in words is "seven million, two hundred seventy-two thousand, four hundred ninety-one".