61225224 has 32 divisors (see below), whose sum is σ = 153282240. Its totient is φ = 20379200.

The previous prime is 61225223. The next prime is 61225243. The reversal of 61225224 is 42252216.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 61225194 and 61225203.

It is not an unprimeable number, because it can be changed into a prime (61225223) 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 7 ways as a sum of consecutive naturals, for example, 21229 + ... + 23939.

It is an arithmetic number, because the mean of its divisors is an integer number (4790070).

Almost surely, 2^61225224 is an apocalyptic number.

It is an amenable number.

61225224 is an abundant number, since it is smaller than the sum of its proper divisors (92057016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61225224 is a wasteful number, since it uses less digits than its factorization.

61225224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3661 (or 3657 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 61225224 is about 7824.6548805682. The cubic root of 61225224 is about 394.1336006681.

The spelling of 61225224 in words is "sixty-one million, two hundred twenty-five thousand, two hundred twenty-four".