551123650 has 96 divisors (see below), whose sum is σ = 1285310592. Its totient is φ = 170803200.

The previous prime is 551123641. The next prime is 551123653. The reversal of 551123650 is 56321155.

It is not an unprimeable number, because it can be changed into a prime (551123653) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 989172 + ... + 989728.

It is an arithmetic number, because the mean of its divisors is an integer number (13388652).

Almost surely, 2^551123650 is an apocalyptic number.

551123650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

551123650 is an abundant number, since it is smaller than the sum of its proper divisors (734186942).

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

551123650 is a wasteful number, since it uses less digits than its factorization.

551123650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 839 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 551123650 is about 23476.0228744138. The cubic root of 551123650 is about 819.8788488474.

It can be divided in two parts, 5511 and 23650, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 551123650 in words is "five hundred fifty-one million, one hundred twenty-three thousand, six hundred fifty".