51063040 has 144 divisors (see below), whose sum is σ = 144224640. Its totient is φ = 16957440.

The previous prime is 51063037. The next prime is 51063041. The reversal of 51063040 is 4036015.

It is a junction number, because it is equal to n+sod(n) for n = 51062999 and 51063017.

It is not an unprimeable number, because it can be changed into a prime (51063041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367291 + ... + 367429.

It is an arithmetic number, because the mean of its divisors is an integer number (1001560).

Almost surely, 2^51063040 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 51063040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72112320).

51063040 is an abundant number, since it is smaller than the sum of its proper divisors (93161600).

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

51063040 is a wasteful number, since it uses less digits than its factorization.

51063040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 51063040 is about 7145.8407482955. The cubic root of 51063040 is about 370.9957110152.

Adding to 51063040 its reverse (4036015), we get a palindrome (55099055).

The spelling of 51063040 in words is "fifty-one million, sixty-three thousand, forty".