51671478 has 32 divisors (see below), whose sum is σ = 108366336. Its totient is φ = 16394048.

The previous prime is 51671461. The next prime is 51671479. The reversal of 51671478 is 87417615.

51671478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51671479) 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 15 ways as a sum of consecutive naturals, for example, 31351 + ... + 32957.

It is an arithmetic number, because the mean of its divisors is an integer number (3386448).

Almost surely, 2^51671478 is an apocalyptic number.

51671478 is an abundant number, since it is smaller than the sum of its proper divisors (56694858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51671478 is a wasteful number, since it uses less digits than its factorization.

51671478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868.

The product of its digits is 47040, while the sum is 39.

The square root of 51671478 is about 7188.2875568525. The cubic root of 51671478 is about 372.4634211788.

The spelling of 51671478 in words is "fifty-one million, six hundred seventy-one thousand, four hundred seventy-eight".