1553031401200 has 120 divisors (see below), whose sum is σ = 4098297513600. Its totient is φ = 562929396480.

The previous prime is 1553031401189. The next prime is 1553031401249. The reversal of 1553031401200 is 21041303551.

It is a happy number.

It is a super-2 number, since 2×1553031401200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

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, 4267510 + ... + 4617109.

It is an arithmetic number, because the mean of its divisors is an integer number (34152479280).

Almost surely, 2^{1553031401200} is an apocalyptic number.

1553031401200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1553031401200 is an abundant number, since it is smaller than the sum of its proper divisors (2545266112400).

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

1553031401200 is a wasteful number, since it uses less digits than its factorization.

1553031401200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8884679 (or 8884668 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 1553031401200 its reverse (21041303551), we get a palindrome (1574072704751).

The spelling of 1553031401200 in words is "one trillion, five hundred fifty-three billion, thirty-one million, four hundred one thousand, two hundred".