51174681 has 8 divisors (see below), whose sum is σ = 69684864. Its totient is φ = 33390480.

The previous prime is 51174677. The next prime is 51174689. The reversal of 51174681 is 18647115.

It is a happy number.

51174681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51174681 - 2² = 51174677 is a prime.

It is a super-2 number, since 2×51174681² = 5237695950903522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51174689) 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 7 ways as a sum of consecutive naturals, for example, 181330 + ... + 181611.

It is an arithmetic number, because the mean of its divisors is an integer number (8710608).

Almost surely, 2^51174681 is an apocalyptic number.

It is an amenable number.

51174681 is a deficient number, since it is larger than the sum of its proper divisors (18510183).

51174681 is a wasteful number, since it uses less digits than its factorization.

51174681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362991.

The product of its digits is 6720, while the sum is 33.

The square root of 51174681 is about 7153.6480903103. The cubic root of 51174681 is about 371.2658880616.

The spelling of 51174681 in words is "fifty-one million, one hundred seventy-four thousand, six hundred eighty-one".