51252464 has 20 divisors (see below), whose sum is σ = 103619856. Its totient is φ = 24511872.

The previous prime is 51252463. The next prime is 51252469. The reversal of 51252464 is 46425215.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51252463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69269 + ... + 70004.

Almost surely, 2^51252464 is an apocalyptic number.

It is an amenable number.

51252464 is an abundant number, since it is smaller than the sum of its proper divisors (52367392).

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

51252464 is a wasteful number, since it uses less digits than its factorization.

51252464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139304 (or 139298 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 51252464 is about 7159.0826227946. The cubic root of 51252464 is about 371.4538948077.

Adding to 51252464 its reverse (46425215), we get a palindrome (97677679).

The spelling of 51252464 in words is "fifty-one million, two hundred fifty-two thousand, four hundred sixty-four".