61949171 has 2 divisors, whose sum is σ = 61949172. Its totient is φ = 61949170.

The previous prime is 61949161. The next prime is 61949183. The reversal of 61949171 is 17194916.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61949171 is a prime.

It is not a weakly prime, because it can be changed into another prime (61949161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30974585 + 30974586.

It is an arithmetic number, because the mean of its divisors is an integer number (30974586).

Almost surely, 2^61949171 is an apocalyptic number.

61949171 is a deficient number, since it is larger than the sum of its proper divisors (1).

61949171 is an equidigital number, since it uses as much as digits as its factorization.

61949171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 38.

The square root of 61949171 is about 7870.7795674889. The cubic root of 61949171 is about 395.6809724337.

The spelling of 61949171 in words is "sixty-one million, nine hundred forty-nine thousand, one hundred seventy-one".