55361830 has 16 divisors (see below), whose sum is σ = 100853424. Its totient is φ = 21877600.

The previous prime is 55361819. The next prime is 55361833. The reversal of 55361830 is 3816355.

It is a junction number, because it is equal to n+sod(n) for n = 55361792 and 55361801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55361833) 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, 32521 + ... + 34180.

It is an arithmetic number, because the mean of its divisors is an integer number (6303339).

Almost surely, 2^55361830 is an apocalyptic number.

55361830 is a deficient number, since it is larger than the sum of its proper divisors (45491594).

55361830 is a wasteful number, since it uses less digits than its factorization.

55361830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66791.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 55361830 is about 7440.5530708409. The cubic root of 55361830 is about 381.1273768503.

The spelling of 55361830 in words is "fifty-five million, three hundred sixty-one thousand, eight hundred thirty".