51025044 has 48 divisors (see below), whose sum is σ = 137166848. Its totient is φ = 14460768.

The previous prime is 51025021. The next prime is 51025049. The reversal of 51025044 is 44052015.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 51025044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51025049) 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, 8277 + ... + 13059.

Almost surely, 2^51025044 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 51025044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68583424).

51025044 is an abundant number, since it is smaller than the sum of its proper divisors (86141804).

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

51025044 is a wasteful number, since it uses less digits than its factorization.

51025044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4924 (or 4922 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 51025044 is about 7143.1816440575. The cubic root of 51025044 is about 370.9036688986.

Adding to 51025044 its reverse (44052015), we get a palindrome (95077059).

The spelling of 51025044 in words is "fifty-one million, twenty-five thousand, forty-four".