7561397 has 2 divisors, whose sum is σ = 7561398. Its totient is φ = 7561396.

The previous prime is 7561391. The next prime is 7561409. The reversal of 7561397 is 7931657.

7561397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7431076 + 130321 = 2726^2 + 361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7561397 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7561397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7561391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3780698 + 3780699.

It is an arithmetic number, because the mean of its divisors is an integer number (3780699).

Almost surely, 2^7561397 is an apocalyptic number.

It is an amenable number.

7561397 is a deficient number, since it is larger than the sum of its proper divisors (1).

7561397 is an equidigital number, since it uses as much as digits as its factorization.

7561397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 38.

The square root of 7561397 is about 2749.7994472325. The cubic root of 7561397 is about 196.2760669663.

The spelling of 7561397 in words is "seven million, five hundred sixty-one thousand, three hundred ninety-seven".