51787134 has 64 divisors (see below), whose sum is σ = 139276800. Its totient is φ = 13924224.

The previous prime is 51787129. The next prime is 51787139. The reversal of 51787134 is 43178715.

51787134 is a `hidden beast` number, since 517 + 8 + 7 + 134 = 666.

It is an interprime number because it is at equal distance from previous prime (51787129) and next prime (51787139).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51787139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2397 + ... + 10455.

It is an arithmetic number, because the mean of its divisors is an integer number (2176200).

Almost surely, 2^51787134 is an apocalyptic number.

51787134 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51787134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69638400).

51787134 is an abundant number, since it is smaller than the sum of its proper divisors (87489666).

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

51787134 is a wasteful number, since it uses less digits than its factorization.

51787134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8094 (or 8088 counting only the distinct ones).

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

The square root of 51787134 is about 7196.3278135449. The cubic root of 51787134 is about 372.7411084115.

The spelling of 51787134 in words is "fifty-one million, seven hundred eighty-seven thousand, one hundred thirty-four".