51000150 has 48 divisors (see below), whose sum is σ = 129438144. Its totient is φ = 13282080.

The previous prime is 51000139. The next prime is 51000163. The reversal of 51000150 is 5100015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2497 + ... + 10403.

It is an arithmetic number, because the mean of its divisors is an integer number (2696628).

Almost surely, 2^51000150 is an apocalyptic number.

51000150 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51000150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64719072).

51000150 is an abundant number, since it is smaller than the sum of its proper divisors (78437994).

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

51000150 is a wasteful number, since it uses less digits than its factorization.

51000150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7965 (or 7960 counting only the distinct ones).

The product of its (nonzero) digits is 25, while the sum is 12.

The square root of 51000150 is about 7141.4389306358. The cubic root of 51000150 is about 370.8433404978.

Adding to 51000150 its reverse (5100015), we get a palindrome (56100165).

The spelling of 51000150 in words is "fifty-one million, one hundred fifty", and thus it is an aban number.