51071017 has 4 divisors (see below), whose sum is σ = 53291520. Its totient is φ = 48850516.

The previous prime is 51070991. The next prime is 51071039. The reversal of 51071017 is 71017015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51071017 - 2⁷ = 51070889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51071047) 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, 1110217 + ... + 1110262.

It is an arithmetic number, because the mean of its divisors is an integer number (13322880).

Almost surely, 2^51071017 is an apocalyptic number.

It is an amenable number.

51071017 is a deficient number, since it is larger than the sum of its proper divisors (2220503).

51071017 is a wasteful number, since it uses less digits than its factorization.

51071017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2220502.

The product of its (nonzero) digits is 245, while the sum is 22.

The square root of 51071017 is about 7146.3988833538. The cubic root of 51071017 is about 371.0150288277.

The spelling of 51071017 in words is "fifty-one million, seventy-one thousand, seventeen".