51223124 has 12 divisors (see below), whose sum is σ = 89896884. Its totient is φ = 25538304.

The previous prime is 51223121. The next prime is 51223127. The reversal of 51223124 is 42132215.

It is an interprime number because it is at equal distance from previous prime (51223121) and next prime (51223127).

It can be written as a sum of positive squares in 2 ways, for example, as 32126224 + 19096900 = 5668^2 + 4370^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51223096 and 51223105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51223121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16727 + ... + 19550.

It is an arithmetic number, because the mean of its divisors is an integer number (7491407).

Almost surely, 2^51223124 is an apocalyptic number.

It is an amenable number.

51223124 is a deficient number, since it is larger than the sum of its proper divisors (38673760).

51223124 is a wasteful number, since it uses less digits than its factorization.

51223124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36634 (or 36632 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 51223124 is about 7157.0331842182. The cubic root of 51223124 is about 371.3830004108.

Adding to 51223124 its reverse (42132215), we get a palindrome (93355339).

Subtracting from 51223124 its reverse (42132215), we obtain a palindrome (9090909).

The spelling of 51223124 in words is "fifty-one million, two hundred twenty-three thousand, one hundred twenty-four".