51248384 has 36 divisors (see below), whose sum is σ = 111602400. Its totient is φ = 23293440.

The previous prime is 51248383. The next prime is 51248497. The reversal of 51248384 is 48384215.

It is a super-2 number, since 2×51248384² = 5252793725222912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51248381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6284 + ... + 11915.

Almost surely, 2^51248384 is an apocalyptic number.

It is an amenable number.

51248384 is an abundant number, since it is smaller than the sum of its proper divisors (60354016).

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

51248384 is a wasteful number, since it uses less digits than its factorization.

51248384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18226 (or 18212 counting only the distinct ones).

The product of its digits is 30720, while the sum is 35.

The square root of 51248384 is about 7158.7976644126. The cubic root of 51248384 is about 371.4440379020. Note that the first 3 decimals are identical.

The spelling of 51248384 in words is "fifty-one million, two hundred forty-eight thousand, three hundred eighty-four".