61939061 has 2 divisors, whose sum is σ = 61939062. Its totient is φ = 61939060.

The previous prime is 61939057. The next prime is 61939063. The reversal of 61939061 is 16093916.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34586161 + 27352900 = 5881^2 + 5230^2 .

It is a cyclic number.

It is not a de Polignac number, because 61939061 - 2² = 61939057 is a prime.

Together with 61939063, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61939063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30969530 + 30969531.

It is an arithmetic number, because the mean of its divisors is an integer number (30969531).

Almost surely, 2^61939061 is an apocalyptic number.

It is an amenable number.

61939061 is a deficient number, since it is larger than the sum of its proper divisors (1).

61939061 is an equidigital number, since it uses as much as digits as its factorization.

61939061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 61939061 is about 7870.1372923222. The cubic root of 61939061 is about 395.6594464407.

The spelling of 61939061 in words is "sixty-one million, nine hundred thirty-nine thousand, sixty-one".