55520235 has 20 divisors (see below), whose sum is σ = 99525888. Its totient is φ = 29610576.

The previous prime is 55520233. The next prime is 55520281. The reversal of 55520235 is 53202555.

55520235 = 65² + 66² + ... + 550².

It is not a de Polignac number, because 55520235 - 2¹ = 55520233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 55520199 and 55520208.

It is not an unprimeable number, because it can be changed into a prime (55520233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 68139 + ... + 68948.

Almost surely, 2^55520235 is an apocalyptic number.

55520235 is a deficient number, since it is larger than the sum of its proper divisors (44005653).

55520235 is a wasteful number, since it uses less digits than its factorization.

55520235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137104 (or 137095 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 55520235 is about 7451.1901733884. The cubic root of 55520235 is about 381.4905331554.

It can be divided in two parts, 55520 and 235, that added together give a palindrome (55755).

The spelling of 55520235 in words is "fifty-five million, five hundred twenty thousand, two hundred thirty-five".