51418279 has 8 divisors (see below), whose sum is σ = 56930688. Its totient is φ = 46045560.

The previous prime is 51418273. The next prime is 51418331. The reversal of 51418279 is 97281415.

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

It is not a de Polignac number, because 51418279 - 2⁷ = 51418151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51418273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34147 + ... + 35620.

It is an arithmetic number, because the mean of its divisors is an integer number (7116336).

Almost surely, 2^51418279 is an apocalyptic number.

51418279 is a deficient number, since it is larger than the sum of its proper divisors (5512409).

51418279 is a wasteful number, since it uses less digits than its factorization.

51418279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69845.

The product of its digits is 20160, while the sum is 37.

The square root of 51418279 is about 7170.6540148023. The cubic root of 51418279 is about 371.8540467821.

The spelling of 51418279 in words is "fifty-one million, four hundred eighteen thousand, two hundred seventy-nine".