51487384 has 16 divisors (see below), whose sum is σ = 103965120. Its totient is φ = 23763360.

The previous prime is 51487369. The next prime is 51487391. The reversal of 51487384 is 48378415.

It is a super-2 number, since 2×51487384² = 5301901422326912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247432 + ... + 247639.

It is an arithmetic number, because the mean of its divisors is an integer number (6497820).

Almost surely, 2^51487384 is an apocalyptic number.

It is an amenable number.

51487384 is an abundant number, since it is smaller than the sum of its proper divisors (52477736).

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

51487384 is a wasteful number, since it uses less digits than its factorization.

51487384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495090 (or 495086 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 51487384 is about 7175.4709949940. The cubic root of 51487384 is about 372.0205600075.

The spelling of 51487384 in words is "fifty-one million, four hundred eighty-seven thousand, three hundred eighty-four".