51055254 has 48 divisors (see below), whose sum is σ = 116925120. Its totient is φ = 16074240.

The previous prime is 51055253. The next prime is 51055259. The reversal of 51055254 is 45255015.

It is a super-2 number, since 2×51055254² = 5213277922009032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51055253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23494 + ... + 25574.

It is an arithmetic number, because the mean of its divisors is an integer number (2435940).

Almost surely, 2^51055254 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51055254, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58462560).

51055254 is an abundant number, since it is smaller than the sum of its proper divisors (65869866).

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

51055254 is a wasteful number, since it uses less digits than its factorization.

51055254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165 (or 2162 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 51055254 is about 7145.2959350890. The cubic root of 51055254 is about 370.9768538050.

The spelling of 51055254 in words is "fifty-one million, fifty-five thousand, two hundred fifty-four".