55563066 has 48 divisors (see below), whose sum is σ = 130201344. Its totient is φ = 17023392.

The previous prime is 55563061. The next prime is 55563083. The reversal of 55563066 is 66036555.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 55563066.

It is not an unprimeable number, because it can be changed into a prime (55563061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85555 + ... + 86201.

It is an arithmetic number, because the mean of its divisors is an integer number (2712528).

Almost surely, 2^55563066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55563066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65100672).

55563066 is an abundant number, since it is smaller than the sum of its proper divisors (74638278).

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

55563066 is a wasteful number, since it uses less digits than its factorization.

55563066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035 (or 1032 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

The square root of 55563066 is about 7454.0637239026. The cubic root of 55563066 is about 381.5886080351.

The spelling of 55563066 in words is "fifty-five million, five hundred sixty-three thousand, sixty-six".