55052221530 has 16 divisors (see below), whose sum is σ = 132125331744. Its totient is φ = 14680592400.

The previous prime is 55052221529. The next prime is 55052221531. The reversal of 55052221530 is 3512225055.

It is an interprime number because it is at equal distance from previous prime (55052221529) and next prime (55052221531).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1835074051 = 55052221530 / (5 + 5 + 0 + 5 + 2 + 2 + 2 + 1 + 5 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (55052221531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 917536996 + ... + 917537055.

It is an arithmetic number, because the mean of its divisors is an integer number (8257833234).

Almost surely, 2^55052221530 is an apocalyptic number.

55052221530 is an abundant number, since it is smaller than the sum of its proper divisors (77073110214).

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

55052221530 is a wasteful number, since it uses less digits than its factorization.

55052221530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835074061.

The product of its (nonzero) digits is 15000, while the sum is 30.

Adding to 55052221530 its reverse (3512225055), we get a palindrome (58564446585).

The spelling of 55052221530 in words is "fifty-five billion, fifty-two million, two hundred twenty-one thousand, five hundred thirty".