552621566 has 32 divisors (see below), whose sum is σ = 991362240. Its totient is φ = 226077696.

The previous prime is 552621539. The next prime is 552621571. The reversal of 552621566 is 665126255.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17390 + ... + 37518.

It is an arithmetic number, because the mean of its divisors is an integer number (30980070).

Almost surely, 2^552621566 is an apocalyptic number.

552621566 is a deficient number, since it is larger than the sum of its proper divisors (438740674).

552621566 is a wasteful number, since it uses less digits than its factorization.

552621566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20228.

The product of its digits is 108000, while the sum is 38.

The square root of 552621566 is about 23507.9043302460. The cubic root of 552621566 is about 820.6209682633.

The spelling of 552621566 in words is "five hundred fifty-two million, six hundred twenty-one thousand, five hundred sixty-six".