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5201028605 = 51040205721
BaseRepresentation
bin1001101100000000…
…10110010111111101
3111102110122121222002
410312000112113331
541122430403410
62220032032045
7242613004463
oct46600262775
914373577862
105201028605
112229932853
121011992625
1364b6b6126
14374a70833
152069157a5
hex1360165fd

5201028605 has 4 divisors (see below), whose sum is σ = 6241234332. Its totient is φ = 4160822880.

The previous prime is 5201028559. The next prime is 5201028607. The reversal of 5201028605 is 5068201025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2336852281 + 2864176324 = 48341^2 + 53518^2 .

It is not a de Polignac number, because 5201028605 - 26 = 5201028541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5201028607) 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 3 ways as a sum of consecutive naturals, for example, 520102856 + ... + 520102865.

It is an arithmetic number, because the mean of its divisors is an integer number (1560308583).

Almost surely, 25201028605 is an apocalyptic number.

It is an amenable number.

5201028605 is a deficient number, since it is larger than the sum of its proper divisors (1040205727).

5201028605 is a wasteful number, since it uses less digits than its factorization.

5201028605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040205726.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 5201028605 is about 72118.1572490590. The cubic root of 5201028605 is about 1732.5924362114.

The spelling of 5201028605 in words is "five billion, two hundred one million, twenty-eight thousand, six hundred five".

Divisors: 1 5 1040205721 5201028605