1553141100 has 144 divisors (see below), whose sum is σ = 5147670528. Its totient is φ = 354178560.

The previous prime is 1553141021. The next prime is 1553141101. The reversal of 1553141100 is 11413551.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1553141101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1799269 + ... + 1800131.

It is an arithmetic number, because the mean of its divisors is an integer number (35747712).

Almost surely, 2^1553141100 is an apocalyptic number.

1553141100 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 1553141100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2573835264).

1553141100 is an abundant number, since it is smaller than the sum of its proper divisors (3594529428).

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

1553141100 is a wasteful number, since it uses less digits than its factorization.

1553141100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1744 (or 1737 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 1553141100 is about 39409.9111899532. The cubic root of 1553141100 is about 1158.0757584497.

Adding to 1553141100 its reverse (11413551), we get a palindrome (1564554651).

The spelling of 1553141100 in words is "one billion, five hundred fifty-three million, one hundred forty-one thousand, one hundred".