51323512 has 8 divisors (see below), whose sum is σ = 96231600. Its totient is φ = 25661752.

The previous prime is 51323501. The next prime is 51323521. The reversal of 51323512 is 21532315.

It is a tau number, because it is divible by the number of its divisors (8).

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, 3207712 + ... + 3207727.

It is an arithmetic number, because the mean of its divisors is an integer number (12028950).

Almost surely, 2^51323512 is an apocalyptic number.

It is an amenable number.

51323512 is a deficient number, since it is larger than the sum of its proper divisors (44908088).

51323512 is a wasteful number, since it uses less digits than its factorization.

51323512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6415445 (or 6415441 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 51323512 is about 7164.0429926125. The cubic root of 51323512 is about 371.6254564518.

Adding to 51323512 its reverse (21532315), we get a palindrome (72855827).

It can be divided in two parts, 513 and 23512, that added together give a square (24025 = 155²).

The spelling of 51323512 in words is "fifty-one million, three hundred twenty-three thousand, five hundred twelve".