2045520651 has 8 divisors (see below), whose sum is σ = 2728812240. Its totient is φ = 1362954752.

The previous prime is 2045520643. The next prime is 2045520667. The reversal of 2045520651 is 1560255402.

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

It is a cyclic number.

It is not a de Polignac number, because 2045520651 - 2³ = 2045520643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2045520551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174810 + ... + 186143.

It is an arithmetic number, because the mean of its divisors is an integer number (341101530).

Almost surely, 2^2045520651 is an apocalyptic number.

2045520651 is a deficient number, since it is larger than the sum of its proper divisors (683291589).

2045520651 is a wasteful number, since it uses less digits than its factorization.

2045520651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362845.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2045520651 is about 45227.4325050627. The cubic root of 2045520651 is about 1269.4081709365.

The spelling of 2045520651 in words is "two billion, forty-five million, five hundred twenty thousand, six hundred fifty-one".