2051567020 has 24 divisors (see below), whose sum is σ = 4413372768. Its totient is φ = 800611200.

The previous prime is 2051566999. The next prime is 2051567029. The reversal of 2051567020 is 207651502.

It is a self number, because there is not a number n which added to its sum of digits gives 2051567020.

It is not an unprimeable number, because it can be changed into a prime (2051567029) 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, 1250136 + ... + 1251775.

It is an arithmetic number, because the mean of its divisors is an integer number (183890532).

Almost surely, 2^2051567020 is an apocalyptic number.

2051567020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051567020 is an abundant number, since it is smaller than the sum of its proper divisors (2361805748).

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

2051567020 is a wasteful number, since it uses less digits than its factorization.

2051567020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501961 (or 2501959 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 2051567020 is about 45294.2272259943. The cubic root of 2051567020 is about 1270.6576914604.

The spelling of 2051567020 in words is "two billion, fifty-one million, five hundred sixty-seven thousand, twenty".