51980282 has 4 divisors (see below), whose sum is σ = 77970426. Its totient is φ = 25990140.

The previous prime is 51980233. The next prime is 51980287. The reversal of 51980282 is 28208915.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50537881 + 1442401 = 7109^2 + 1201^2 .

It is not an unprimeable number, because it can be changed into a prime (51980287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12995069 + ... + 12995072.

Almost surely, 2^51980282 is an apocalyptic number.

51980282 is a deficient number, since it is larger than the sum of its proper divisors (25990144).

51980282 is a wasteful number, since it uses less digits than its factorization.

51980282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25990143.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 51980282 is about 7209.7352239871. The cubic root of 51980282 is about 373.2039317333.

The spelling of 51980282 in words is "fifty-one million, nine hundred eighty thousand, two hundred eighty-two".