5220155550 has 24 divisors (see below), whose sum is σ = 12945986136. Its totient is φ = 1392041440.

The previous prime is 5220155543. The next prime is 5220155587. The reversal of 5220155550 is 555510225.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17400369 + ... + 17400668.

It is an arithmetic number, because the mean of its divisors is an integer number (539416089).

Almost surely, 2^5220155550 is an apocalyptic number.

5220155550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5220155550 is an abundant number, since it is smaller than the sum of its proper divisors (7725830586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5220155550 is a wasteful number, since it uses less digits than its factorization.

5220155550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34801052 (or 34801047 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 5220155550 is about 72250.6439417671. The cubic root of 5220155550 is about 1734.7137255474.

Adding to 5220155550 its reverse (555510225), we get a palindrome (5775665775).

The spelling of 5220155550 in words is "five billion, two hundred twenty million, one hundred fifty-five thousand, five hundred fifty".