51155148 has 48 divisors (see below), whose sum is σ = 130959360. Its totient is φ = 15412800.

The previous prime is 51155147. The next prime is 51155173. The reversal of 51155148 is 84155115.

It is not an unprimeable number, because it can be changed into a prime (51155147) 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, 24198 + ... + 26226.

It is an arithmetic number, because the mean of its divisors is an integer number (2728320).

Almost surely, 2^51155148 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 51155148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65479680).

51155148 is an abundant number, since it is smaller than the sum of its proper divisors (79804212).

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

51155148 is a wasteful number, since it uses less digits than its factorization.

51155148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238 (or 2236 counting only the distinct ones).

The product of its digits is 4000, while the sum is 30.

The square root of 51155148 is about 7152.2827125331. The cubic root of 51155148 is about 371.2186455625.

The spelling of 51155148 in words is "fifty-one million, one hundred fifty-five thousand, one hundred forty-eight".