51258648 has 32 divisors (see below), whose sum is σ = 146453760. Its totient is φ = 14645280.

The previous prime is 51258617. The next prime is 51258659. The reversal of 51258648 is 84685215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152388 + ... + 152723.

It is an arithmetic number, because the mean of its divisors is an integer number (4576680).

Almost surely, 2^51258648 is an apocalyptic number.

It is an amenable number.

51258648 is an abundant number, since it is smaller than the sum of its proper divisors (95195112).

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

51258648 is a wasteful number, since it uses less digits than its factorization.

51258648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305127 (or 305123 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 51258648 is about 7159.5145086800. The cubic root of 51258648 is about 371.4688337870.

The spelling of 51258648 in words is "fifty-one million, two hundred fifty-eight thousand, six hundred forty-eight".