552621660 has 48 divisors (see below), whose sum is σ = 1554709632. Its totient is φ = 146664000.

The previous prime is 552621659. The next prime is 552621661. The reversal of 552621660 is 66126255.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (552621659) and next prime (552621661).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (552621661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9166 + ... + 34485.

It is an arithmetic number, because the mean of its divisors is an integer number (32389784).

Almost surely, 2^552621660 is an apocalyptic number.

It is an amenable number.

552621660 is an abundant number, since it is smaller than the sum of its proper divisors (1002087972).

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

552621660 is a wasteful number, since it uses less digits than its factorization.

552621660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43874 (or 43872 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 552621660 is about 23507.9063295735. The cubic root of 552621660 is about 820.6210147920.

The spelling of 552621660 in words is "five hundred fifty-two million, six hundred twenty-one thousand, six hundred sixty".