51163332 has 48 divisors (see below), whose sum is σ = 130738944. Its totient is φ = 15444000.

The previous prime is 51163327. The next prime is 51163351. The reversal of 51163332 is 23336115.

It is a happy number.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43107 + ... + 44277.

It is an arithmetic number, because the mean of its divisors is an integer number (2723728).

Almost surely, 2^51163332 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 51163332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65369472).

51163332 is an abundant number, since it is smaller than the sum of its proper divisors (79575612).

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

51163332 is a wasteful number, since it uses less digits than its factorization.

51163332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1518 counting only the distinct ones).

The product of its digits is 1620, while the sum is 24.

The square root of 51163332 is about 7152.8548146876. The cubic root of 51163332 is about 371.2384408422.

Adding to 51163332 its reverse (23336115), we get a palindrome (74499447).

It can be divided in two parts, 5116 and 3332, that added together give a palindrome (8448).

The spelling of 51163332 in words is "fifty-one million, one hundred sixty-three thousand, three hundred thirty-two".