7487591 has 2 divisors, whose sum is σ = 7487592. Its totient is φ = 7487590.

The previous prime is 7487573. The next prime is 7487593. The reversal of 7487591 is 1957847.

It is a strong prime.

It is an emirp because it is prime and its reverse (1957847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7487591 - 2²² = 3293287 is a prime.

It is a super-3 number, since 3×7487591³ (a number of 22 digits) contains 333 as substring.

Together with 7487593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7487593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3743795 + 3743796.

It is an arithmetic number, because the mean of its divisors is an integer number (3743796).

Almost surely, 2^7487591 is an apocalyptic number.

7487591 is a deficient number, since it is larger than the sum of its proper divisors (1).

7487591 is an equidigital number, since it uses as much as digits as its factorization.

7487591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 41.

The square root of 7487591 is about 2736.3462865654. The cubic root of 7487591 is about 195.6353678153.

The spelling of 7487591 in words is "seven million, four hundred eighty-seven thousand, five hundred ninety-one".