51980079 has 8 divisors (see below), whose sum is σ = 71180080. Its totient is φ = 33716736.

The previous prime is 51980059. The next prime is 51980081. The reversal of 51980079 is 97008915.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51980079 - 2⁷ = 51979951 is a prime.

It is a super-2 number, since 2×51980079² = 5403857225692482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51980009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234034 + ... + 234255.

It is an arithmetic number, because the mean of its divisors is an integer number (8897510).

Almost surely, 2^51980079 is an apocalyptic number.

51980079 is a deficient number, since it is larger than the sum of its proper divisors (19200001).

51980079 is a wasteful number, since it uses less digits than its factorization.

51980079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468329.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 51980079 is about 7209.7211457864. The cubic root of 51980079 is about 373.2034459049.

The spelling of 51980079 in words is "fifty-one million, nine hundred eighty thousand, seventy-nine".