61078429 has 2 divisors, whose sum is σ = 61078430. Its totient is φ = 61078428.

The previous prime is 61078417. The next prime is 61078439. The reversal of 61078429 is 92487016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47403225 + 13675204 = 6885^2 + 3698^2 .

It is a cyclic number.

It is not a de Polignac number, because 61078429 - 2⁷ = 61078301 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61078439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30539214 + 30539215.

It is an arithmetic number, because the mean of its divisors is an integer number (30539215).

Almost surely, 2^61078429 is an apocalyptic number.

It is an amenable number.

61078429 is a deficient number, since it is larger than the sum of its proper divisors (1).

61078429 is an equidigital number, since it uses as much as digits as its factorization.

61078429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 61078429 is about 7815.2689653012. The cubic root of 61078429 is about 393.8183540020.

The spelling of 61078429 in words is "sixty-one million, seventy-eight thousand, four hundred twenty-nine".