2051564260 has 24 divisors (see below), whose sum is σ = 4367305656. Its totient is φ = 809383680.

The previous prime is 2051564239. The next prime is 2051564293. The reversal of 2051564260 is 624651502.

It can be written as a sum of positive squares in 4 ways, for example, as 23503104 + 2028061156 = 4848^2 + 45034^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701131 + ... + 704050.

It is an arithmetic number, because the mean of its divisors is an integer number (181971069).

Almost surely, 2^2051564260 is an apocalyptic number.

2051564260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051564260 is an abundant number, since it is smaller than the sum of its proper divisors (2315741396).

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

2051564260 is a wasteful number, since it uses less digits than its factorization.

2051564260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405263 (or 1405261 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 2051564260 is about 45294.1967585253. The cubic root of 2051564260 is about 1270.6571216493.

The spelling of 2051564260 in words is "two billion, fifty-one million, five hundred sixty-four thousand, two hundred sixty".