51748879 has 8 divisors (see below), whose sum is σ = 63691040. Its totient is φ = 40944096.

The previous prime is 51748849. The next prime is 51748883. The reversal of 51748879 is 97884715.

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

It is a cyclic number.

It is not a de Polignac number, because 51748879 - 2¹³ = 51740687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51748819) 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, 284244 + ... + 284425.

It is an arithmetic number, because the mean of its divisors is an integer number (7961380).

Almost surely, 2^51748879 is an apocalyptic number.

51748879 is a deficient number, since it is larger than the sum of its proper divisors (11942161).

51748879 is a wasteful number, since it uses less digits than its factorization.

51748879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568689.

The product of its digits is 564480, while the sum is 49.

The square root of 51748879 is about 7193.6693696611. The cubic root of 51748879 is about 372.6493048912.

The spelling of 51748879 in words is "fifty-one million, seven hundred forty-eight thousand, eight hundred seventy-nine".