51125244 has 12 divisors (see below), whose sum is σ = 119292264. Its totient is φ = 17041744.

The previous prime is 51125201. The next prime is 51125279. The reversal of 51125244 is 44252115.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×51125244² = 5227581148119072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2130207 + ... + 2130230.

It is an arithmetic number, because the mean of its divisors is an integer number (9941022).

Almost surely, 2^51125244 is an apocalyptic number.

It is an amenable number.

51125244 is an abundant number, since it is smaller than the sum of its proper divisors (68167020).

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

51125244 is a wasteful number, since it uses less digits than its factorization.

51125244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260444 (or 4260442 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 51125244 is about 7150.1918855371. The cubic root of 51125244 is about 371.1462964662.

Adding to 51125244 its reverse (44252115), we get a palindrome (95377359).

The spelling of 51125244 in words is "fifty-one million, one hundred twenty-five thousand, two hundred forty-four".