61081037 has 2 divisors, whose sum is σ = 61081038. Its totient is φ = 61081036.

The previous prime is 61081003. The next prime is 61081049. The reversal of 61081037 is 73018016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58690921 + 2390116 = 7661^2 + 1546^2 .

It is a cyclic number.

It is not a de Polignac number, because 61081037 - 2⁶ = 61080973 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 61080997 and 61081015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61081837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30540518 + 30540519.

It is an arithmetic number, because the mean of its divisors is an integer number (30540519).

Almost surely, 2^61081037 is an apocalyptic number.

It is an amenable number.

61081037 is a deficient number, since it is larger than the sum of its proper divisors (1).

61081037 is an equidigital number, since it uses as much as digits as its factorization.

61081037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 61081037 is about 7815.4358163829. The cubic root of 61081037 is about 393.8239591650.

The spelling of 61081037 in words is "sixty-one million, eighty-one thousand, thirty-seven".