51124 has 6 divisors (see below), whose sum is σ = 89474. Its totient is φ = 25560.

The previous prime is 51109. The next prime is 51131. The reversal of 51124 is 42115.

It can be written as a sum of positive squares in only one way, i.e., 47524 + 3600 = 218^2 + 60^2 .

It is a super-2 number, since 2×51124² = 5227326752, 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 as a sum of consecutive naturals, namely, 6387 + ... + 6394.

2⁵¹¹²⁴ is an apocalyptic number.

It is an amenable number.

51124 is a deficient number, since it is larger than the sum of its proper divisors (38350).

51124 is a wasteful number, since it uses less digits than its factorization.

51124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12785 (or 12783 counting only the distinct ones).

The product of its digits is 40, while the sum is 13.

The square root of 51124 is about 226.1061697522. The cubic root of 51124 is about 37.1143286148.

Adding to 51124 its reverse (42115), we get a palindrome (93239).

Subtracting from 51124 its reverse (42115), we obtain a palindrome (9009).

It can be divided in two parts, 511 and 24, that added together give a palindrome (535).

The spelling of 51124 in words is "fifty-one thousand, one hundred twenty-four".