51302532 has 24 divisors (see below), whose sum is σ = 126747936. Its totient is φ = 16094848.

The previous prime is 51302519. The next prime is 51302557. The reversal of 51302532 is 23520315.

It is a super-2 number, since 2×51302532² = 5263899579222048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51302499 and 51302508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125538 + ... + 125945.

It is an arithmetic number, because the mean of its divisors is an integer number (5281164).

Almost surely, 2^51302532 is an apocalyptic number.

It is an amenable number.

51302532 is an abundant number, since it is smaller than the sum of its proper divisors (75445404).

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

51302532 is a wasteful number, since it uses less digits than its factorization.

51302532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251507 (or 251505 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 51302532 is about 7162.5785859563. The cubic root of 51302532 is about 371.5748119265.

Adding to 51302532 its reverse (23520315), we get a palindrome (74822847).

The spelling of 51302532 in words is "fifty-one million, three hundred two thousand, five hundred thirty-two".