51321352 has 8 divisors (see below), whose sum is σ = 96227550. Its totient is φ = 25660672.

The previous prime is 51321343. The next prime is 51321371. The reversal of 51321352 is 25312315.

It can be written as a sum of positive squares in only one way, i.e., 51065316 + 256036 = 7146^2 + 506^2 .

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

It is a super-2 number, since 2×51321352² = 5267762342215808, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3207577 + ... + 3207592.

Almost surely, 2^51321352 is an apocalyptic number.

It is an amenable number.

51321352 is a deficient number, since it is larger than the sum of its proper divisors (44906198).

51321352 is a wasteful number, since it uses less digits than its factorization.

51321352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6415175 (or 6415171 counting only the distinct ones).

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

The square root of 51321352 is about 7163.8922381622. The cubic root of 51321352 is about 371.6202429722.

Adding to 51321352 its reverse (25312315), we get a palindrome (76633667).

The spelling of 51321352 in words is "fifty-one million, three hundred twenty-one thousand, three hundred fifty-two".