51982368 has 24 divisors (see below), whose sum is σ = 136453968. Its totient is φ = 17327424.

The previous prime is 51982361. The next prime is 51982387. The reversal of 51982368 is 86328915.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (51982361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270646 + ... + 270837.

It is an arithmetic number, because the mean of its divisors is an integer number (5685582).

Almost surely, 2^51982368 is an apocalyptic number.

It is an amenable number.

51982368 is an abundant number, since it is smaller than the sum of its proper divisors (84471600).

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

51982368 is a wasteful number, since it uses less digits than its factorization.

51982368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541496 (or 541488 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 51982368 is about 7209.8798880425. The cubic root of 51982368 is about 373.2089239660.

The spelling of 51982368 in words is "fifty-one million, nine hundred eighty-two thousand, three hundred sixty-eight".