51150620 has 96 divisors (see below), whose sum is σ = 123088896. Its totient is φ = 17740800.

The previous prime is 51150599. The next prime is 51150623. The reversal of 51150620 is 2605115.

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

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 51150592 and 51150601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51150623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242315 + ... + 242525.

It is an arithmetic number, because the mean of its divisors is an integer number (1282176).

Almost surely, 2^51150620 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 51150620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61544448).

51150620 is an abundant number, since it is smaller than the sum of its proper divisors (71938276).

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

51150620 is a wasteful number, since it uses less digits than its factorization.

51150620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 51150620 is about 7151.9661632309. The cubic root of 51150620 is about 371.2076924282.

Adding to 51150620 its reverse (2605115), we get a palindrome (53755735).

The spelling of 51150620 in words is "fifty-one million, one hundred fifty thousand, six hundred twenty".