51974971 has 4 divisors (see below), whose sum is σ = 51991632. Its totient is φ = 51958312.

The previous prime is 51974957. The next prime is 51974981. The reversal of 51974971 is 17947915.

51974971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51974971 - 2⁹ = 51974459 is a prime.

It is a super-2 number, since 2×51974971² = 5402795220901682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51974981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2095 + ... + 10408.

It is an arithmetic number, because the mean of its divisors is an integer number (12997908).

Almost surely, 2^51974971 is an apocalyptic number.

51974971 is a deficient number, since it is larger than the sum of its proper divisors (16661).

51974971 is a wasteful number, since it uses less digits than its factorization.

51974971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16660.

The product of its digits is 79380, while the sum is 43.

The square root of 51974971 is about 7209.3668931467. The cubic root of 51974971 is about 373.1912208007.

The spelling of 51974971 in words is "fifty-one million, nine hundred seventy-four thousand, nine hundred seventy-one".