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2971997005 = 51931284179
BaseRepresentation
bin1011000100100101…
…0001001101001101
321200010100002110011
42301021101031031
522041312401010
61210524113221
7133435362205
oct26111211515
97603302404
102971997005
11129568437a
126ab395811
1338495b513
142029d7405
15125db1a8a
hexb125134d

2971997005 has 8 divisors (see below), whose sum is σ = 3754101600. Its totient is φ = 2252460816.

The previous prime is 2971996913. The next prime is 2971997009. The reversal of 2971997005 is 5007991792.

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 2971997005 - 219 = 2971472717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2971997005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2971997009) 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, 15641995 + ... + 15642184.

It is an arithmetic number, because the mean of its divisors is an integer number (469262700).

Almost surely, 22971997005 is an apocalyptic number.

It is an amenable number.

2971997005 is a deficient number, since it is larger than the sum of its proper divisors (782104595).

2971997005 is a wasteful number, since it uses less digits than its factorization.

2971997005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31284203.

The product of its (nonzero) digits is 357210, while the sum is 49.

The square root of 2971997005 is about 54516.0252127757. The cubic root of 2971997005 is about 1437.7480562979.

The spelling of 2971997005 in words is "two billion, nine hundred seventy-one million, nine hundred ninety-seven thousand, five".