550661970 has 16 divisors (see below), whose sum is σ = 1321588800. Its totient is φ = 146843184.

The previous prime is 550661921. The next prime is 550661981. The reversal of 550661970 is 79166055.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9177670 + ... + 9177729.

It is an arithmetic number, because the mean of its divisors is an integer number (82599300).

Almost surely, 2^550661970 is an apocalyptic number.

550661970 is an abundant number, since it is smaller than the sum of its proper divisors (770926830).

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

550661970 is a wasteful number, since it uses less digits than its factorization.

550661970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18355409.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 550661970 is about 23466.1878028793. The cubic root of 550661970 is about 819.6498455418.

It can be divided in two parts, 5506 and 61970, that added together give a palindrome (67476).

The spelling of 550661970 in words is "five hundred fifty million, six hundred sixty-one thousand, nine hundred seventy".