2051981052 has 24 divisors (see below), whose sum is σ = 5223224832. Its totient is φ = 621812400.

The previous prime is 2051981023. The next prime is 2051981053. The reversal of 2051981052 is 2501891502.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051981053) 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, 7772524 + ... + 7772787.

It is an arithmetic number, because the mean of its divisors is an integer number (217634368).

Almost surely, 2^2051981052 is an apocalyptic number.

2051981052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2051981052 is an abundant number, since it is smaller than the sum of its proper divisors (3171243780).

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

2051981052 is a wasteful number, since it uses less digits than its factorization.

2051981052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15545329 (or 15545327 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 2051981052 is about 45298.7974674825. The cubic root of 2051981052 is about 1270.7431639396.

The spelling of 2051981052 in words is "two billion, fifty-one million, nine hundred eighty-one thousand, fifty-two".