51549872 has 30 divisors (see below), whose sum is σ = 109787244. Its totient is φ = 23430880.

The previous prime is 51549863. The next prime is 51549881. The reversal of 51549872 is 27894515.

It is an interprime number because it is at equal distance from previous prime (51549863) and next prime (51549881).

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 5 ways as a sum of consecutive naturals, for example, 11378 + ... + 15249.

Almost surely, 2^51549872 is an apocalyptic number.

It is an amenable number.

51549872 is an abundant number, since it is smaller than the sum of its proper divisors (58237372).

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

51549872 is a wasteful number, since it uses less digits than its factorization.

51549872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26657 (or 26640 counting only the distinct ones).

The product of its digits is 100800, while the sum is 41.

The square root of 51549872 is about 7179.8239532735. The cubic root of 51549872 is about 372.1710008905.

The spelling of 51549872 in words is "fifty-one million, five hundred forty-nine thousand, eight hundred seventy-two".