61390229 has 2 divisors, whose sum is σ = 61390230. Its totient is φ = 61390228.

The previous prime is 61390223. The next prime is 61390237. The reversal of 61390229 is 92209316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51811204 + 9579025 = 7198^2 + 3095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61390229 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 61390195 and 61390204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61390223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30695114 + 30695115.

It is an arithmetic number, because the mean of its divisors is an integer number (30695115).

Almost surely, 2^61390229 is an apocalyptic number.

It is an amenable number.

61390229 is a deficient number, since it is larger than the sum of its proper divisors (1).

61390229 is an equidigital number, since it uses as much as digits as its factorization.

61390229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 61390229 is about 7835.1917015476. The cubic root of 61390229 is about 394.4873528994.

The spelling of 61390229 in words is "sixty-one million, three hundred ninety thousand, two hundred twenty-nine".