1552555203220 has 192 divisors, whose sum is σ = 4119126359040. Its totient is φ = 478945640448.

The previous prime is 1552555203217. The next prime is 1552555203229. The reversal of 1552555203220 is 223025552551.

It is a self number, because there is not a number n which added to its sum of digits gives 1552555203220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1552555203229) 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 63 ways as a sum of consecutive naturals, for example, 114345072 + ... + 114358648.

It is an arithmetic number, because the mean of its divisors is an integer number (21453783120).

Almost surely, 2^{1552555203220} is an apocalyptic number.

1552555203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1552555203220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059563179520).

1552555203220 is an abundant number, since it is smaller than the sum of its proper divisors (2566571155820).

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

1552555203220 is a wasteful number, since it uses less digits than its factorization.

1552555203220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15722 (or 15720 counting only the distinct ones).

The product of its (nonzero) digits is 150000, while the sum is 37.

The spelling of 1552555203220 in words is "one trillion, five hundred fifty-two billion, five hundred fifty-five million, two hundred three thousand, two hundred twenty".