51455416 has 16 divisors (see below), whose sum is σ = 100674000. Its totient is φ = 24609024.

The previous prime is 51455399. The next prime is 51455423. The reversal of 51455416 is 61455415.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 139641 + ... + 140008.

It is an arithmetic number, because the mean of its divisors is an integer number (6292125).

Almost surely, 2^51455416 is an apocalyptic number.

It is an amenable number.

51455416 is a deficient number, since it is larger than the sum of its proper divisors (49218584).

51455416 is a wasteful number, since it uses less digits than its factorization.

51455416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279678 (or 279674 counting only the distinct ones).

The product of its digits is 12000, while the sum is 31.

The square root of 51455416 is about 7173.2430601507. The cubic root of 51455416 is about 371.9435494563.

Subtracting 51455416 from its reverse (61455415), we obtain a palindrome (9999999).

The spelling of 51455416 in words is "fifty-one million, four hundred fifty-five thousand, four hundred sixteen".