61555344 has 40 divisors (see below), whose sum is σ = 161632512. Its totient is φ = 20181120.

The previous prime is 61555343. The next prime is 61555381. The reversal of 61555344 is 44355516.

It is not an unprimeable number, because it can be changed into a prime (61555343) 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, 7584 + ... + 13439.

Almost surely, 2^61555344 is an apocalyptic number.

It is an amenable number.

61555344 is an abundant number, since it is smaller than the sum of its proper divisors (100077168).

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

61555344 is a wasteful number, since it uses less digits than its factorization.

61555344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21095 (or 21089 counting only the distinct ones).

The product of its digits is 36000, while the sum is 33.

The square root of 61555344 is about 7845.7213817469. The cubic root of 61555344 is about 394.8407070139.

The spelling of 61555344 in words is "sixty-one million, five hundred fifty-five thousand, three hundred forty-four".