553146440 has 64 divisors (see below), whose sum is σ = 1551692160. Its totient is φ = 172408320.

The previous prime is 553146409. The next prime is 553146443. The reversal of 553146440 is 44641355.

It is a junction number, because it is equal to n+sod(n) for n = 553146397 and 553146406.

It is not an unprimeable number, because it can be changed into a prime (553146443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86717 + ... + 92876.

It is an arithmetic number, because the mean of its divisors is an integer number (24245190).

Almost surely, 2^553146440 is an apocalyptic number.

It is an amenable number.

553146440 is an abundant number, since it is smaller than the sum of its proper divisors (998545720).

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

553146440 is a wasteful number, since it uses less digits than its factorization.

553146440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179622 (or 179618 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 553146440 is about 23519.0654576239. The cubic root of 553146440 is about 820.8806916999.

Adding to 553146440 its reverse (44641355), we get a palindrome (597787795).

The spelling of 553146440 in words is "five hundred fifty-three million, one hundred forty-six thousand, four hundred forty".