51251896 has 16 divisors (see below), whose sum is σ = 97178400. Its totient is φ = 25337664.

The previous prime is 51251891. The next prime is 51251899. The reversal of 51251896 is 69815215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51251891) 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, 35280 + ... + 36703.

It is an arithmetic number, because the mean of its divisors is an integer number (6073650).

Almost surely, 2^51251896 is an apocalyptic number.

It is an amenable number.

51251896 is a deficient number, since it is larger than the sum of its proper divisors (45926504).

51251896 is a wasteful number, since it uses less digits than its factorization.

51251896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72078 (or 72074 counting only the distinct ones).

The product of its digits is 21600, while the sum is 37.

The square root of 51251896 is about 7159.0429527975. The cubic root of 51251896 is about 371.4525226031.

It can be divided in two parts, 5125 and 1896, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 51251896 in words is "fifty-one million, two hundred fifty-one thousand, eight hundred ninety-six".