2051335220 has 48 divisors (see below), whose sum is σ = 4704086016. Its totient is φ = 745200000.

The previous prime is 2051335207. The next prime is 2051335261. The reversal of 2051335220 is 225331502.

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, 249170 + ... + 257270.

It is an arithmetic number, because the mean of its divisors is an integer number (98001792).

Almost surely, 2^2051335220 is an apocalyptic number.

2051335220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051335220 is an abundant number, since it is smaller than the sum of its proper divisors (2652750796).

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

2051335220 is a wasteful number, since it uses less digits than its factorization.

2051335220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9272 (or 9270 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 2051335220 is about 45291.6683287335. The cubic root of 2051335220 is about 1270.6098338076.

Adding to 2051335220 its reverse (225331502), we get a palindrome (2276666722).

The spelling of 2051335220 in words is "two billion, fifty-one million, three hundred thirty-five thousand, two hundred twenty".