61225444 has 24 divisors (see below), whose sum is σ = 122633280. Its totient is φ = 26200416.

The previous prime is 61225427. The next prime is 61225459. The reversal of 61225444 is 44452216.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25362 + ... + 27670.

It is an arithmetic number, because the mean of its divisors is an integer number (5109720).

Almost surely, 2^61225444 is an apocalyptic number.

It is an amenable number.

61225444 is an abundant number, since it is smaller than the sum of its proper divisors (61407836).

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

61225444 is a wasteful number, since it uses less digits than its factorization.

61225444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267 (or 3265 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

The square root of 61225444 is about 7824.6689386836. The cubic root of 61225444 is about 394.1340727463.

The spelling of 61225444 in words is "sixty-one million, two hundred twenty-five thousand, four hundred forty-four".