553890 has 32 divisors (see below), whose sum is σ = 1368000. Its totient is φ = 143424.

The previous prime is 553873. The next prime is 553897. The reversal of 553890 is 98355.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (553897) by changing a digit.

553890 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 861 + ... + 1359.

It is an arithmetic number, because the mean of its divisors is an integer number (42750).

2⁵⁵³⁸⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 553890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684000).

553890 is an abundant number, since it is smaller than the sum of its proper divisors (814110).

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

553890 is a wasteful number, since it uses less digits than its factorization.

553890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 553890 is about 744.2378652017. The cubic root of 553890 is about 82.1248346454.

Subtracting from 553890 its reverse (98355), we obtain a triangular number (455535 = T₉₅₄).

The spelling of 553890 in words is "five hundred fifty-three thousand, eight hundred ninety".