51256468 has 6 divisors (see below), whose sum is σ = 89698826. Its totient is φ = 25628232.

The previous prime is 51256453. The next prime is 51256477. The reversal of 51256468 is 86465215.

It can be written as a sum of positive squares in only one way, i.e., 29615364 + 21641104 = 5442^2 + 4652^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6407055 + ... + 6407062.

Almost surely, 2^51256468 is an apocalyptic number.

It is an amenable number.

51256468 is a deficient number, since it is larger than the sum of its proper divisors (38442358).

51256468 is a wasteful number, since it uses less digits than its factorization.

51256468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12814121 (or 12814119 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 51256468 is about 7159.3622621013. The cubic root of 51256468 is about 371.4635675958.

The spelling of 51256468 in words is "fifty-one million, two hundred fifty-six thousand, four hundred sixty-eight".