51232064 has 56 divisors (see below), whose sum is σ = 110520480. Its totient is φ = 23422464.

The previous prime is 51232061. The next prime is 51232073. The reversal of 51232064 is 46023215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51232061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115427 + ... + 115869.

It is an arithmetic number, because the mean of its divisors is an integer number (1973580).

Almost surely, 2^51232064 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 51232064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55260240).

51232064 is an abundant number, since it is smaller than the sum of its proper divisors (59288416).

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

51232064 is a wasteful number, since it uses less digits than its factorization.

51232064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 51232064 is about 7157.6577174380. The cubic root of 51232064 is about 371.4046050470.

Adding to 51232064 its reverse (46023215), we get a palindrome (97255279).

The spelling of 51232064 in words is "fifty-one million, two hundred thirty-two thousand, sixty-four".