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2495000047 = 4635388769
BaseRepresentation
bin1001010010110110…
…1010110111101111
320102212210010122011
42110231222313233
520102210000142
61051324302051
7115554102421
oct22455526757
96385703564
102495000047
1110703a9511
125976a1927
13309b9b6b7
1419950c811
15e908e417
hex94b6adef

2495000047 has 4 divisors (see below), whose sum is σ = 2500389280. Its totient is φ = 2489610816.

The previous prime is 2495000009. The next prime is 2495000093. The reversal of 2495000047 is 7400005942.

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

It is a 8-Lehmer number, since φ(2495000047) divides (2495000047-1)8.

It is a cyclic number.

It is not a de Polignac number, because 2495000047 - 219 = 2494475759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2494999982 and 2495000018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2495000947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2693922 + ... + 2694847.

It is an arithmetic number, because the mean of its divisors is an integer number (625097320).

Almost surely, 22495000047 is an apocalyptic number.

2495000047 is a deficient number, since it is larger than the sum of its proper divisors (5389233).

2495000047 is an equidigital number, since it uses as much as digits as its factorization.

2495000047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5389232.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2495000047 is about 49949.9754454394. The cubic root of 2495000047 is about 1356.3034070668.

Adding to 2495000047 its reverse (7400005942), we get a palindrome (9895005989).

The spelling of 2495000047 in words is "two billion, four hundred ninety-five million, forty-seven", and thus it is an aban number.

Divisors: 1 463 5388769 2495000047