61555832 has 64 divisors (see below), whose sum is σ = 130824960. Its totient is φ = 26956800.

The previous prime is 61555831. The next prime is 61555841. The reversal of 61555832 is 23855516.

61555832 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 61555832 = 95³ + 393³ = 302³ + 324³.

It is a junction number, because it is equal to n+sod(n) for n = 61555792 and 61555801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61555831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196508 + ... + 196820.

It is an arithmetic number, because the mean of its divisors is an integer number (2044140).

Almost surely, 2^61555832 is an apocalyptic number.

61555832 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61555832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65412480).

61555832 is an abundant number, since it is smaller than the sum of its proper divisors (69269128).

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

61555832 is a wasteful number, since it uses less digits than its factorization.

61555832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 420 counting only the distinct ones).

The product of its digits is 36000, while the sum is 35.

The square root of 61555832 is about 7845.7524814386. The cubic root of 61555832 is about 394.8417504205.

The spelling of 61555832 in words is "sixty-one million, five hundred fifty-five thousand, eight hundred thirty-two".