51729255 has 12 divisors (see below), whose sum is σ = 89664120. Its totient is φ = 27588912.

The previous prime is 51729247. The next prime is 51729263. The reversal of 51729255 is 55292715.

51729255 is a `hidden beast` number, since 517 + 2 + 92 + 55 = 666.

It is an interprime number because it is at equal distance from previous prime (51729247) and next prime (51729263).

It is not a de Polignac number, because 51729255 - 2³ = 51729247 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 574725 + ... + 574814.

It is an arithmetic number, because the mean of its divisors is an integer number (7472010).

Almost surely, 2^51729255 is an apocalyptic number.

51729255 is a deficient number, since it is larger than the sum of its proper divisors (37934865).

51729255 is a wasteful number, since it uses less digits than its factorization.

51729255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149550 (or 1149547 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 51729255 is about 7192.3052632657. The cubic root of 51729255 is about 372.6021940830.

It can be divided in two parts, 51729 and 255, that added together give a square (51984 = 228²).

The spelling of 51729255 in words is "fifty-one million, seven hundred twenty-nine thousand, two hundred fifty-five".