61277941 has 2 divisors, whose sum is σ = 61277942. Its totient is φ = 61277940.

The previous prime is 61277939. The next prime is 61277971. The reversal of 61277941 is 14977216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59613841 + 1664100 = 7721^2 + 1290^2 .

It is a cyclic number.

It is not a de Polignac number, because 61277941 - 2¹ = 61277939 is a prime.

Together with 61277939, it forms a pair of twin primes.

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 61277941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61277921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30638970 + 30638971.

It is an arithmetic number, because the mean of its divisors is an integer number (30638971).

Almost surely, 2^61277941 is an apocalyptic number.

It is an amenable number.

61277941 is a deficient number, since it is larger than the sum of its proper divisors (1).

61277941 is an equidigital number, since it uses as much as digits as its factorization.

61277941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 37.

The square root of 61277941 is about 7828.0228027261. The cubic root of 61277941 is about 394.2466890279.

The spelling of 61277941 in words is "sixty-one million, two hundred seventy-seven thousand, nine hundred forty-one".