61126397 has 2 divisors, whose sum is σ = 61126398. Its totient is φ = 61126396.

The previous prime is 61126369. The next prime is 61126399. The reversal of 61126397 is 79362116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50537881 + 10588516 = 7109^2 + 3254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61126397 is a prime.

Together with 61126399, 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 (61126399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30563198 + 30563199.

It is an arithmetic number, because the mean of its divisors is an integer number (30563199).

Almost surely, 2^61126397 is an apocalyptic number.

It is an amenable number.

61126397 is a deficient number, since it is larger than the sum of its proper divisors (1).

61126397 is an equidigital number, since it uses as much as digits as its factorization.

61126397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 61126397 is about 7818.3372273137. The cubic root of 61126397 is about 393.9214222265.

The spelling of 61126397 in words is "sixty-one million, one hundred twenty-six thousand, three hundred ninety-seven".