51843974 has 16 divisors (see below), whose sum is σ = 95712288. Its totient is φ = 20509632.

The previous prime is 51843971. The next prime is 51843991. The reversal of 51843974 is 47934815.

It is a super-2 number, since 2×51843974² = 5375595280225352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51843971) 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, 142247 + ... + 142610.

It is an arithmetic number, because the mean of its divisors is an integer number (5982018).

Almost surely, 2^51843974 is an apocalyptic number.

51843974 is a deficient number, since it is larger than the sum of its proper divisors (43868314).

51843974 is a wasteful number, since it uses less digits than its factorization.

51843974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284879.

The product of its digits is 120960, while the sum is 41.

The square root of 51843974 is about 7200.2759669335. The cubic root of 51843974 is about 372.8774283583.

The spelling of 51843974 in words is "fifty-one million, eight hundred forty-three thousand, nine hundred seventy-four".