1553140224 has 160 divisors (see below), whose sum is σ = 4625269440. Its totient is φ = 514584576.

The previous prime is 1553140223. The next prime is 1553140283. The reversal of 1553140224 is 4220413551.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1553140223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3911994 + ... + 3912390.

It is an arithmetic number, because the mean of its divisors is an integer number (28907934).

Almost surely, 2^1553140224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1553140224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2312634720).

1553140224 is an abundant number, since it is smaller than the sum of its proper divisors (3072129216).

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

1553140224 is an equidigital number, since it uses as much as digits as its factorization.

1553140224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707 (or 685 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1553140224 is about 39409.9000759961. The cubic root of 1553140224 is about 1158.0755407243.

Adding to 1553140224 its reverse (4220413551), we get a palindrome (5773553775).

It can be divided in two parts, 15531 and 40224, that added together give a palindrome (55755).

The spelling of 1553140224 in words is "one billion, five hundred fifty-three million, one hundred forty thousand, two hundred twenty-four".