61229 has 4 divisors (see below), whose sum is σ = 69984. Its totient is φ = 52476.

The previous prime is 61223. The next prime is 61231. The reversal of 61229 is 92216.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4367 + ... + 4380.

It is an arithmetic number, because the mean of its divisors is an integer number (17496).

2⁶¹²²⁹ is an apocalyptic number.

It is an amenable number.

61229 is a deficient number, since it is larger than the sum of its proper divisors (8755).

61229 is an equidigital number, since it uses as much as digits as its factorization.

61229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8754.

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

The square root of 61229 is about 247.4449433712. Note that the first 3 decimals coincide. The cubic root of 61229 is about 39.4141703091.

The spelling of 61229 in words is "sixty-one thousand, two hundred twenty-nine".