551081850 has 48 divisors (see below), whose sum is σ = 1490931360. Its totient is φ = 133595200.

The previous prime is 551081849. The next prime is 551081879. The reversal of 551081850 is 58180155.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165345 + ... + 168644.

It is an arithmetic number, because the mean of its divisors is an integer number (31061070).

Almost surely, 2^551081850 is an apocalyptic number.

551081850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

551081850 is an abundant number, since it is smaller than the sum of its proper divisors (939849510).

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

551081850 is a wasteful number, since it uses less digits than its factorization.

551081850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334015 (or 334010 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 33.

The square root of 551081850 is about 23475.1325874850. The cubic root of 551081850 is about 819.8581204063.

The spelling of 551081850 in words is "five hundred fifty-one million, eighty-one thousand, eight hundred fifty".