55520402 has 16 divisors (see below), whose sum is σ = 100776960. Its totient is φ = 22394688.

The previous prime is 55520401. The next prime is 55520441. The reversal of 55520402 is 20402555.

55520402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55520401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116402 + ... + 116877.

It is an arithmetic number, because the mean of its divisors is an integer number (6298560).

Almost surely, 2^55520402 is an apocalyptic number.

55520402 is a deficient number, since it is larger than the sum of its proper divisors (45256558).

55520402 is a wasteful number, since it uses less digits than its factorization.

55520402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233305.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 55520402 is about 7451.2013796434. The cubic root of 55520402 is about 381.4909156518.

Adding to 55520402 its reverse (20402555), we get a palindrome (75922957).

The spelling of 55520402 in words is "fifty-five million, five hundred twenty thousand, four hundred two".