61555422 has 8 divisors (see below), whose sum is σ = 123110856. Its totient is φ = 20518472.

The previous prime is 61555411. The next prime is 61555423. The reversal of 61555422 is 22455516.

It is a sphenic number, since it is the product of 3 distinct primes.

61555422 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 61555422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61555423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5129613 + ... + 5129624.

It is an arithmetic number, because the mean of its divisors is an integer number (15388857).

Almost surely, 2^61555422 is an apocalyptic number.

61555422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61555422 is a wasteful number, since it uses less digits than its factorization.

61555422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10259242.

The product of its digits is 12000, while the sum is 30.

The square root of 61555422 is about 7845.7263526075. The cubic root of 61555422 is about 394.8408737883.

The spelling of 61555422 in words is "sixty-one million, five hundred fifty-five thousand, four hundred twenty-two".