553833640 has 40 divisors (see below), whose sum is σ = 1266894450. Its totient is φ = 217901760.

The previous prime is 553833607. The next prime is 553833647. The reversal of 553833640 is 46338355.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 332478756 + 221354884 = 18234^2 + 14878^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 553833640.

It is not an unprimeable number, because it can be changed into a prime (553833647) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9079210 + ... + 9079270.

Almost surely, 2^553833640 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 553833640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633447225).

553833640 is an abundant number, since it is smaller than the sum of its proper divisors (713060810).

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

553833640 is an frugal number, since it uses more digits than its factorization.

553833640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 553833640 is about 23533.6703469731. The cubic root of 553833640 is about 821.2204906664.

The spelling of 553833640 in words is "five hundred fifty-three million, eight hundred thirty-three thousand, six hundred forty".