51163072 has 56 divisors (see below), whose sum is σ = 105558336. Its totient is φ = 24588288.

The previous prime is 51163043. The next prime is 51163117. The reversal of 51163072 is 27036115.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219468 + ... + 219700.

Almost surely, 2^51163072 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 51163072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52779168).

51163072 is an abundant number, since it is smaller than the sum of its proper divisors (54395264).

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

51163072 is a wasteful number, since it uses less digits than its factorization.

51163072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 51163072 is about 7152.8366401030. The cubic root of 51163072 is about 371.2378119924.

Adding to 51163072 its reverse (27036115), we get a palindrome (78199187).

The spelling of 51163072 in words is "fifty-one million, one hundred sixty-three thousand, seventy-two".