51778134 has 24 divisors (see below), whose sum is σ = 112725912. Its totient is φ = 17176320.

The previous prime is 51778123. The next prime is 51778157. The reversal of 51778134 is 43187715.

51778134 is a `hidden beast` number, since 517 + 7 + 8 + 134 = 666.

It is a super-3 number, since 3×51778134³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3019 + ... + 10614.

It is an arithmetic number, because the mean of its divisors is an integer number (4696913).

Almost surely, 2^51778134 is an apocalyptic number.

51778134 is an abundant number, since it is smaller than the sum of its proper divisors (60947778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51778134 is a wasteful number, since it uses less digits than its factorization.

51778134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13852 (or 13849 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 51778134 is about 7195.7024674454. The cubic root of 51778134 is about 372.7195144745.

The spelling of 51778134 in words is "fifty-one million, seven hundred seventy-eight thousand, one hundred thirty-four".