51011948 has 12 divisors (see below), whose sum is σ = 96138000. Its totient is φ = 23543952.

The previous prime is 51011927. The next prime is 51011971. The reversal of 51011948 is 84911015.

It is a self number, because there is not a number n which added to its sum of digits gives 51011948.

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 in 3 ways as a sum of consecutive naturals, for example, 490448 + ... + 490551.

It is an arithmetic number, because the mean of its divisors is an integer number (8011500).

Almost surely, 2^51011948 is an apocalyptic number.

It is an amenable number.

51011948 is a deficient number, since it is larger than the sum of its proper divisors (45126052).

51011948 is a wasteful number, since it uses less digits than its factorization.

51011948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981016 (or 981014 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 51011948 is about 7142.2649068765. The cubic root of 51011948 is about 370.8719343510.

The spelling of 51011948 in words is "fifty-one million, eleven thousand, nine hundred forty-eight".