55558030 has 16 divisors (see below), whose sum is σ = 109095984. Its totient is φ = 20202880.

The previous prime is 55558001. The next prime is 55558031. The reversal of 55558030 is 3085555.

It is a junction number, because it is equal to n+sod(n) for n = 55557983 and 55558001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55558031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252427 + ... + 252646.

It is an arithmetic number, because the mean of its divisors is an integer number (6818499).

Almost surely, 2^55558030 is an apocalyptic number.

55558030 is a deficient number, since it is larger than the sum of its proper divisors (53537954).

55558030 is a wasteful number, since it uses less digits than its factorization.

55558030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505091.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 55558030 is about 7453.7259139306. The cubic root of 55558030 is about 381.5770791639.

It can be divided in two parts, 555 and 58030, that added together give a palindrome (58585).

The spelling of 55558030 in words is "fifty-five million, five hundred fifty-eight thousand, thirty".