51375163 has 4 divisors (see below), whose sum is σ = 58714480. Its totient is φ = 44035848.

The previous prime is 51375157. The next prime is 51375197. The reversal of 51375163 is 36157315.

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 51375163 - 2¹⁷ = 51244091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51375263) 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, 3669648 + ... + 3669661.

It is an arithmetic number, because the mean of its divisors is an integer number (14678620).

Almost surely, 2^51375163 is an apocalyptic number.

51375163 is a deficient number, since it is larger than the sum of its proper divisors (7339317).

51375163 is an equidigital number, since it uses as much as digits as its factorization.

51375163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7339316.

The product of its digits is 9450, while the sum is 31.

The square root of 51375163 is about 7167.6469639624. The cubic root of 51375163 is about 371.7500802366.

The spelling of 51375163 in words is "fifty-one million, three hundred seventy-five thousand, one hundred sixty-three".