61376261 has 2 divisors, whose sum is σ = 61376262. Its totient is φ = 61376260.

The previous prime is 61376207. The next prime is 61376281. The reversal of 61376261 is 16267316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31192225 + 30184036 = 5585^2 + 5494^2 .

It is a cyclic number.

It is not a de Polignac number, because 61376261 - 2¹⁴ = 61359877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61376201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30688130 + 30688131.

It is an arithmetic number, because the mean of its divisors is an integer number (30688131).

Almost surely, 2^61376261 is an apocalyptic number.

It is an amenable number.

61376261 is a deficient number, since it is larger than the sum of its proper divisors (1).

61376261 is an equidigital number, since it uses as much as digits as its factorization.

61376261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 32.

The square root of 61376261 is about 7834.3002878368. The cubic root of 61376261 is about 394.4574316486.

The spelling of 61376261 in words is "sixty-one million, three hundred seventy-six thousand, two hundred sixty-one".