55861260 has 144 divisors (see below), whose sum is σ = 193810176. Its totient is φ = 11771136.

The previous prime is 55861243. The next prime is 55861261. The reversal of 55861260 is 6216855.

It is not an unprimeable number, because it can be changed into a prime (55861261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70587 + ... + 71373.

It is an arithmetic number, because the mean of its divisors is an integer number (1345904).

Almost surely, 2^55861260 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55861260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96905088).

55861260 is an abundant number, since it is smaller than the sum of its proper divisors (137948916).

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

55861260 is a wasteful number, since it uses less digits than its factorization.

55861260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832 (or 817 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 55861260 is about 7474.0390686696. The cubic root of 55861260 is about 382.2700228037.

The spelling of 55861260 in words is "fifty-five million, eight hundred sixty-one thousand, two hundred sixty".