51980127 has 4 divisors (see below), whose sum is σ = 69306840. Its totient is φ = 34653416.

The previous prime is 51980119. The next prime is 51980147. The reversal of 51980127 is 72108915.

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

It is a cyclic number.

It is not a de Polignac number, because 51980127 - 2³ = 51980119 is a prime.

It is a super-2 number, since 2×51980127² = 5403867205872258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51980147) 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, 8663352 + ... + 8663357.

It is an arithmetic number, because the mean of its divisors is an integer number (17326710).

Almost surely, 2^51980127 is an apocalyptic number.

51980127 is a deficient number, since it is larger than the sum of its proper divisors (17326713).

51980127 is a wasteful number, since it uses less digits than its factorization.

51980127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17326712.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 51980127 is about 7209.7244746245. The cubic root of 51980127 is about 373.2035607807.

The spelling of 51980127 in words is "fifty-one million, nine hundred eighty thousand, one hundred twenty-seven".