61901429 has 2 divisors, whose sum is σ = 61901430. Its totient is φ = 61901428.

The previous prime is 61901419. The next prime is 61901447. The reversal of 61901429 is 92410916.

61901429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60871204 + 1030225 = 7802^2 + 1015^2 .

It is a cyclic number.

It is not a de Polignac number, because 61901429 - 2⁸ = 61901173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61901395 and 61901404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61901419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30950714 + 30950715.

It is an arithmetic number, because the mean of its divisors is an integer number (30950715).

Almost surely, 2^61901429 is an apocalyptic number.

It is an amenable number.

61901429 is a deficient number, since it is larger than the sum of its proper divisors (1).

61901429 is an equidigital number, since it uses as much as digits as its factorization.

61901429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 61901429 is about 7867.7461194423. The cubic root of 61901429 is about 395.5793006087.

The spelling of 61901429 in words is "sixty-one million, nine hundred one thousand, four hundred twenty-nine".