7561091 has 2 divisors, whose sum is σ = 7561092. Its totient is φ = 7561090.

The previous prime is 7561067. The next prime is 7561093. The reversal of 7561091 is 1901657.

It is a happy number.

7561091 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7561091 - 2¹⁸ = 7298947 is a prime.

It is a super-2 number, since 2×7561091² = 114340194220562, which contains 22 as substring.

Together with 7561093, 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 (7561093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3780545 + 3780546.

It is an arithmetic number, because the mean of its divisors is an integer number (3780546).

Almost surely, 2^7561091 is an apocalyptic number.

7561091 is a deficient number, since it is larger than the sum of its proper divisors (1).

7561091 is an equidigital number, since it uses as much as digits as its factorization.

7561091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 7561091 is about 2749.7438062481. The cubic root of 7561091 is about 196.2734192507.

The spelling of 7561091 in words is "seven million, five hundred sixty-one thousand, ninety-one".