51451996 has 24 divisors (see below), whose sum is σ = 96689376. Its totient is φ = 23869440.

The previous prime is 51451987. The next prime is 51451999. The reversal of 51451996 is 69915415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51451999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501 + ... + 10156.

It is an arithmetic number, because the mean of its divisors is an integer number (4028724).

Almost surely, 2^51451996 is an apocalyptic number.

It is an amenable number.

51451996 is a deficient number, since it is larger than the sum of its proper divisors (45237380).

51451996 is a wasteful number, since it uses less digits than its factorization.

51451996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10749 (or 10747 counting only the distinct ones).

The product of its digits is 48600, while the sum is 40.

The square root of 51451996 is about 7173.0046702899. The cubic root of 51451996 is about 371.9353088263.

The spelling of 51451996 in words is "fifty-one million, four hundred fifty-one thousand, nine hundred ninety-six".