551606650 has 48 divisors (see below), whose sum is σ = 1241545536. Its totient is φ = 177995520.

The previous prime is 551606647. The next prime is 551606659. The reversal of 551606650 is 56606155.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (551606659) 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, 40404 + ... + 52303.

It is an arithmetic number, because the mean of its divisors is an integer number (25865532).

Almost surely, 2^551606650 is an apocalyptic number.

551606650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

551606650 is an abundant number, since it is smaller than the sum of its proper divisors (689938886).

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

551606650 is a wasteful number, since it uses less digits than its factorization.

551606650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92743 (or 92738 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 551606650 is about 23486.3077132188. The cubic root of 551606650 is about 820.1182904900.

The spelling of 551606650 in words is "five hundred fifty-one million, six hundred six thousand, six hundred fifty".