61289229 has 16 divisors (see below), whose sum is σ = 82684800. Its totient is φ = 40380096.

The previous prime is 61289203. The next prime is 61289237. The reversal of 61289229 is 92298216.

It is not a de Polignac number, because 61289229 - 2⁷ = 61289101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61289329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139392 + ... + 139830.

It is an arithmetic number, because the mean of its divisors is an integer number (5167800).

Almost surely, 2^61289229 is an apocalyptic number.

It is an amenable number.

61289229 is a deficient number, since it is larger than the sum of its proper divisors (21395571).

61289229 is a wasteful number, since it uses less digits than its factorization.

61289229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884.

The product of its digits is 31104, while the sum is 39.

The square root of 61289229 is about 7828.7437689581. The cubic root of 61289229 is about 394.2708955821.

The spelling of 61289229 in words is "sixty-one million, two hundred eighty-nine thousand, two hundred twenty-nine".