2101550530 has 16 divisors (see below), whose sum is σ = 3875054904. Its totient is φ = 820117120.

The previous prime is 2101550519. The next prime is 2101550533. The reversal of 2101550530 is 350551012.

It can be written as a sum of positive squares in 4 ways, for example, as 1733639769 + 367910761 = 41637^2 + 19181^2 .

It is not an unprimeable number, because it can be changed into a prime (2101550533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2562457 + ... + 2563276.

Almost surely, 2^2101550530 is an apocalyptic number.

2101550530 is a deficient number, since it is larger than the sum of its proper divisors (1773504374).

2101550530 is a wasteful number, since it uses less digits than its factorization.

2101550530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125781.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 2101550530 is about 45842.6714971979. The cubic root of 2101550530 is about 1280.8942583099.

The spelling of 2101550530 in words is "two billion, one hundred one million, five hundred fifty thousand, five hundred thirty".