1055553232400 has 120 divisors (see below), whose sum is σ = 2659528291200. Its totient is φ = 401833681920.

The previous prime is 1055553232399. The next prime is 1055553232471. The reversal of 1055553232400 is 42323555501.

It is a super-2 number, since 2×1055553232400² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1542524 + ... + 2119076.

It is an arithmetic number, because the mean of its divisors is an integer number (22162735760).

Almost surely, 2^{1055553232400} is an apocalyptic number.

1055553232400 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 1055553232400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1329764145600).

1055553232400 is an abundant number, since it is smaller than the sum of its proper divisors (1603975058800).

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

1055553232400 is a wasteful number, since it uses less digits than its factorization.

1055553232400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576793 (or 576782 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 1055553232400 its reverse (42323555501), we get a palindrome (1097876787901).

The spelling of 1055553232400 in words is "one trillion, fifty-five billion, five hundred fifty-three million, two hundred thirty-two thousand, four hundred".