61000229 has 2 divisors, whose sum is σ = 61000230. Its totient is φ = 61000228.

The previous prime is 61000207. The next prime is 61000231. The reversal of 61000229 is 92200016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40768225 + 20232004 = 6385^2 + 4498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61000229 is a prime.

Together with 61000231, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61000229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61000249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30500114 + 30500115.

It is an arithmetic number, because the mean of its divisors is an integer number (30500115).

Almost surely, 2^61000229 is an apocalyptic number.

It is an amenable number.

61000229 is a deficient number, since it is larger than the sum of its proper divisors (1).

61000229 is an equidigital number, since it uses as much as digits as its factorization.

61000229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 61000229 is about 7810.2643361156. The cubic root of 61000229 is about 393.6502109095.

The spelling of 61000229 in words is "sixty-one million, two hundred twenty-nine", and thus it is an aban number.