51023360 has 80 divisors (see below), whose sum is σ = 128898000. Its totient is φ = 19316736.

The previous prime is 51023359. The next prime is 51023363. The reversal of 51023360 is 6332015.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51023363) 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, 48116 + ... + 49164.

It is an arithmetic number, because the mean of its divisors is an integer number (1611225).

Almost surely, 2^51023360 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 51023360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64449000).

51023360 is an abundant number, since it is smaller than the sum of its proper divisors (77874640).

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

51023360 is a wasteful number, since it uses less digits than its factorization.

51023360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 51023360 is about 7143.0637684400. The cubic root of 51023360 is about 370.8995884928.

Adding to 51023360 its reverse (6332015), we get a palindrome (57355375).

The spelling of 51023360 in words is "fifty-one million, twenty-three thousand, three hundred sixty".