2105551550 has 24 divisors (see below), whose sum is σ = 3942275952. Its totient is φ = 836640000.

The previous prime is 2105551523. The next prime is 2105551607. The reversal of 2105551550 is 551555012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131891 + ... + 146990.

It is an arithmetic number, because the mean of its divisors is an integer number (164261498).

Almost surely, 2^2105551550 is an apocalyptic number.

2105551550 is a deficient number, since it is larger than the sum of its proper divisors (1836724402).

2105551550 is a wasteful number, since it uses less digits than its factorization.

2105551550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279044 (or 279039 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 29.

The square root of 2105551550 is about 45886.2893466011. The cubic root of 2105551550 is about 1281.7066163895.

The spelling of 2105551550 in words is "two billion, one hundred five million, five hundred fifty-one thousand, five hundred fifty".