51456406 has 8 divisors (see below), whose sum is σ = 77258880. Its totient is φ = 25703448.

The previous prime is 51456403. The next prime is 51456473. The reversal of 51456406 is 60465415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51456403) by changing a digit.

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, 9661 + ... + 14008.

It is an arithmetic number, because the mean of its divisors is an integer number (9657360).

Almost surely, 2^51456406 is an apocalyptic number.

51456406 is a deficient number, since it is larger than the sum of its proper divisors (25802474).

51456406 is a wasteful number, since it uses less digits than its factorization.

51456406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24758.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 51456406 is about 7173.3120662634. The cubic root of 51456406 is about 371.9459348336.

Subtracting 51456406 from its reverse (60465415), we obtain a palindrome (9009009).

The spelling of 51456406 in words is "fifty-one million, four hundred fifty-six thousand, four hundred six".