55361860 has 24 divisors (see below), whose sum is σ = 123099480. Its totient is φ = 20841984.

The previous prime is 55361833. The next prime is 55361881. The reversal of 55361860 is 6816355.

It can be written as a sum of positive squares in 4 ways, for example, as 27123264 + 28238596 = 5208^2 + 5314^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 81075 + ... + 81754.

It is an arithmetic number, because the mean of its divisors is an integer number (5129145).

Almost surely, 2^55361860 is an apocalyptic number.

It is an amenable number.

55361860 is an abundant number, since it is smaller than the sum of its proper divisors (67737620).

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

55361860 is a wasteful number, since it uses less digits than its factorization.

55361860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162855 (or 162853 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 55361860 is about 7440.5550868198. Note that the first 3 decimals coincide. The cubic root of 55361860 is about 381.1274456933.

It can be divided in two parts, 5536 and 1860, that added together give a square (7396 = 86²).

The spelling of 55361860 in words is "fifty-five million, three hundred sixty-one thousand, eight hundred sixty".