7481491 has 2 divisors, whose sum is σ = 7481492. Its totient is φ = 7481490.

The previous prime is 7481407. The next prime is 7481503. The reversal of 7481491 is 1941847.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7481491 - 2¹³ = 7473299 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (7481401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3740745 + 3740746.

It is an arithmetic number, because the mean of its divisors is an integer number (3740746).

Almost surely, 2^7481491 is an apocalyptic number.

7481491 is a deficient number, since it is larger than the sum of its proper divisors (1).

7481491 is an equidigital number, since it uses as much as digits as its factorization.

7481491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 34.

The square root of 7481491 is about 2735.2314344494. The cubic root of 7481491 is about 195.5822265596.

The spelling of 7481491 in words is "seven million, four hundred eighty-one thousand, four hundred ninety-one".