55520030 has 8 divisors (see below), whose sum is σ = 99936072. Its totient is φ = 22208008.

The previous prime is 55519973. The next prime is 55520051. The reversal of 55520030 is 3002555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 55519984 and 55520011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2775992 + ... + 2776011.

It is an arithmetic number, because the mean of its divisors is an integer number (12492009).

Almost surely, 2^55520030 is an apocalyptic number.

55520030 is a deficient number, since it is larger than the sum of its proper divisors (44416042).

55520030 is a wasteful number, since it uses less digits than its factorization.

55520030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5552010.

The product of its (nonzero) digits is 750, while the sum is 20.

The square root of 55520030 is about 7451.1764171841. The cubic root of 55520030 is about 381.4900636230.

Adding to 55520030 its reverse (3002555), we get a palindrome (58522585).

The spelling of 55520030 in words is "fifty-five million, five hundred twenty thousand, thirty".