61959011 has 2 divisors, whose sum is σ = 61959012. Its totient is φ = 61959010.

The previous prime is 61958971. The next prime is 61959013. The reversal of 61959011 is 11095916.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61959011 is a prime.

Together with 61959013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61959013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30979505 + 30979506.

It is an arithmetic number, because the mean of its divisors is an integer number (30979506).

Almost surely, 2^61959011 is an apocalyptic number.

61959011 is a deficient number, since it is larger than the sum of its proper divisors (1).

61959011 is an equidigital number, since it uses as much as digits as its factorization.

61959011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 32.

The square root of 61959011 is about 7871.4046395799. The cubic root of 61959011 is about 395.7019212997.

The spelling of 61959011 in words is "sixty-one million, nine hundred fifty-nine thousand, eleven".