51384232 has 8 divisors (see below), whose sum is σ = 96345450. Its totient is φ = 25692112.

The previous prime is 51384211. The next prime is 51384233. The reversal of 51384232 is 23248315.

It can be written as a sum of positive squares in only one way, i.e., 46158436 + 5225796 = 6794^2 + 2286^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 51384232.

It is not an unprimeable number, because it can be changed into a prime (51384233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3211507 + ... + 3211522.

Almost surely, 2^51384232 is an apocalyptic number.

It is an amenable number.

51384232 is a deficient number, since it is larger than the sum of its proper divisors (44961218).

51384232 is a wasteful number, since it uses less digits than its factorization.

51384232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6423035 (or 6423031 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 51384232 is about 7168.2795704409. The cubic root of 51384232 is about 371.7719533423.

The spelling of 51384232 in words is "fifty-one million, three hundred eighty-four thousand, two hundred thirty-two".