51872479 has 2 divisors, whose sum is σ = 51872480. Its totient is φ = 51872478.

The previous prime is 51872477. The next prime is 51872497. The reversal of 51872479 is 97427815.

Together with next prime (51872497) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51872479 - 2¹ = 51872477 is a prime.

Together with 51872477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51872477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25936239 + 25936240.

It is an arithmetic number, because the mean of its divisors is an integer number (25936240).

Almost surely, 2^51872479 is an apocalyptic number.

51872479 is a deficient number, since it is larger than the sum of its proper divisors (1).

51872479 is an equidigital number, since it uses as much as digits as its factorization.

51872479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 43.

The square root of 51872479 is about 7202.2551329427. The cubic root of 51872479 is about 372.9457546772.

The spelling of 51872479 in words is "fifty-one million, eight hundred seventy-two thousand, four hundred seventy-nine".