61956113 has 2 divisors, whose sum is σ = 61956114. Its totient is φ = 61956112.

The previous prime is 61956107. The next prime is 61956157. The reversal of 61956113 is 31165916.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52171729 + 9784384 = 7223^2 + 3128^2 .

It is a cyclic number.

It is not a de Polignac number, because 61956113 - 2⁸ = 61955857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61956113.

It is not a weakly prime, because it can be changed into another prime (61956913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30978056 + 30978057.

It is an arithmetic number, because the mean of its divisors is an integer number (30978057).

Almost surely, 2^61956113 is an apocalyptic number.

It is an amenable number.

61956113 is a deficient number, since it is larger than the sum of its proper divisors (1).

61956113 is an equidigital number, since it uses as much as digits as its factorization.

61956113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 32.

The square root of 61956113 is about 7871.2205533831. The cubic root of 61956113 is about 395.6957518336.

The spelling of 61956113 in words is "sixty-one million, nine hundred fifty-six thousand, one hundred thirteen".