552640 has 56 divisors (see below), whose sum is σ = 1444752. Its totient is φ = 199680.

The previous prime is 552611. The next prime is 552649. The reversal of 552640 is 46255.

552640 = T₉₅ + T₉₆ + ... + T₁₆₀.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (552649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3442 + ... + 3598.

2⁵⁵²⁶⁴⁰ 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 552640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722376).

552640 is an abundant number, since it is smaller than the sum of its proper divisors (892112).

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

552640 is a wasteful number, since it uses less digits than its factorization.

552640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 552640 is about 743.3976055921. The cubic root of 552640 is about 82.0630092747.

Adding to 552640 its reverse (46255), we get a palindrome (598895).

The spelling of 552640 in words is "five hundred fifty-two thousand, six hundred forty".