553121140 has 96 divisors (see below), whose sum is σ = 1401773184. Its totient is φ = 180610560.

The previous prime is 553121137. The next prime is 553121143. The reversal of 553121140 is 41121355.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (553121137) and next prime (553121143).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553121143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103207 + ... + 108433.

It is an arithmetic number, because the mean of its divisors is an integer number (14601804).

Almost surely, 2^553121140 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 553121140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700886592).

553121140 is an abundant number, since it is smaller than the sum of its proper divisors (848652044).

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

553121140 is a wasteful number, since it uses less digits than its factorization.

553121140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5297 (or 5295 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 553121140 is about 23518.5275899662. The cubic root of 553121140 is about 820.8681762690.

Adding to 553121140 its reverse (41121355), we get a palindrome (594242495).

The spelling of 553121140 in words is "five hundred fifty-three million, one hundred twenty-one thousand, one hundred forty".