2051333605 has 8 divisors (see below), whose sum is σ = 2461865112. Its totient is φ = 1640890368.

The previous prime is 2051333587. The next prime is 2051333623. The reversal of 2051333605 is 5063331502.

It is an interprime number because it is at equal distance from previous prime (2051333587) and next prime (2051333623).

It can be written as a sum of positive squares in 4 ways, for example, as 4133089 + 2047200516 = 2033^2 + 45246^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2051333605 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 51157 + ... + 81973.

It is an arithmetic number, because the mean of its divisors is an integer number (307733139).

Almost surely, 2^2051333605 is an apocalyptic number.

It is an amenable number.

2051333605 is a deficient number, since it is larger than the sum of its proper divisors (410531507).

2051333605 is a wasteful number, since it uses less digits than its factorization.

2051333605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44135.

The product of its (nonzero) digits is 8100, while the sum is 28.

The square root of 2051333605 is about 45291.6504998438. The cubic root of 2051333605 is about 1270.6095003604.

The spelling of 2051333605 in words is "two billion, fifty-one million, three hundred thirty-three thousand, six hundred five".