55152020220 has 72 divisors (see below), whose sum is σ = 169740620112. Its totient is φ = 13370184960.

The previous prime is 55152020201. The next prime is 55152020251. The reversal of 55152020220 is 2202025155.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3791089 + ... + 3805608.

Almost surely, 2^55152020220 is an apocalyptic number.

It is an amenable number.

55152020220 is an abundant number, since it is smaller than the sum of its proper divisors (114588599892).

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

55152020220 is a wasteful number, since it uses less digits than its factorization.

55152020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7596731 (or 7596718 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

Adding to 55152020220 its reverse (2202025155), we get a palindrome (57354045375).

The spelling of 55152020220 in words is "fifty-five billion, one hundred fifty-two million, twenty thousand, two hundred twenty".