51136360 has 128 divisors (see below), whose sum is σ = 136028160. Its totient is φ = 17107200.

The previous prime is 51136339. The next prime is 51136381. The reversal of 51136360 is 6363115.

It is an interprime number because it is at equal distance from previous prime (51136339) and next prime (51136381).

It is a super-2 number, since 2×51136360² = 5229854628099200, which contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 313639 + ... + 313801.

It is an arithmetic number, because the mean of its divisors is an integer number (1062720).

Almost surely, 2^51136360 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51136360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68014080).

51136360 is an abundant number, since it is smaller than the sum of its proper divisors (84891800).

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

51136360 is a wasteful number, since it uses less digits than its factorization.

51136360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 51136360 is about 7150.9691650852. The cubic root of 51136360 is about 371.1731935718.

Adding to 51136360 its reverse (6363115), we get a palindrome (57499475).

The spelling of 51136360 in words is "fifty-one million, one hundred thirty-six thousand, three hundred sixty".