2101551260 has 48 divisors (see below), whose sum is σ = 4497941280. Its totient is φ = 824567040.

The previous prime is 2101551253. The next prime is 2101551293. The reversal of 2101551260 is 621551012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 482171 + ... + 486509.

It is an arithmetic number, because the mean of its divisors is an integer number (93707110).

Almost surely, 2^2101551260 is an apocalyptic number.

2101551260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101551260 is an abundant number, since it is smaller than the sum of its proper divisors (2396390020).

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

2101551260 is a wasteful number, since it uses less digits than its factorization.

2101551260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4806 (or 4804 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 2101551260 is about 45842.6794592114. The cubic root of 2101551260 is about 1280.8944066215.

The spelling of 2101551260 in words is "two billion, one hundred one million, five hundred fifty-one thousand, two hundred sixty".