51772159 has 4 divisors (see below), whose sum is σ = 51885904. Its totient is φ = 51658416.

The previous prime is 51772067. The next prime is 51772181. The reversal of 51772159 is 95127715.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95127715 = 5 ⋅19025543.

It is a cyclic number.

It is not a de Polignac number, because 51772159 - 2¹¹ = 51770111 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 (51772459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56187 + ... + 57100.

It is an arithmetic number, because the mean of its divisors is an integer number (12971476).

Almost surely, 2^51772159 is an apocalyptic number.

51772159 is a deficient number, since it is larger than the sum of its proper divisors (113745).

51772159 is a wasteful number, since it uses less digits than its factorization.

51772159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113744.

The product of its digits is 22050, while the sum is 37.

The square root of 51772159 is about 7195.2872771002. The cubic root of 51772159 is about 372.7051771175.

The spelling of 51772159 in words is "fifty-one million, seven hundred seventy-two thousand, one hundred fifty-nine".