51380416 has 28 divisors (see below), whose sum is σ = 102189280. Its totient is φ = 25632000.

The previous prime is 51380369. The next prime is 51380429. The reversal of 51380416 is 61408315.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47530 + ... + 48598.

Almost surely, 2^51380416 is an apocalyptic number.

It is an amenable number.

51380416 is a deficient number, since it is larger than the sum of its proper divisors (50808864).

51380416 is a wasteful number, since it uses less digits than its factorization.

51380416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832 (or 1822 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 51380416 is about 7168.0133928446. The cubic root of 51380416 is about 371.7627500203.

The spelling of 51380416 in words is "fifty-one million, three hundred eighty thousand, four hundred sixteen".