51465623 has 8 divisors (see below), whose sum is σ = 59099520. Its totient is φ = 44324280.

The previous prime is 51465599. The next prime is 51465649. The reversal of 51465623 is 32656415.

51465623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-51465623 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51465623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51465683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122915 + ... + 123332.

It is an arithmetic number, because the mean of its divisors is an integer number (7387440).

Almost surely, 2^51465623 is an apocalyptic number.

51465623 is a deficient number, since it is larger than the sum of its proper divisors (7633897).

51465623 is a wasteful number, since it uses less digits than its factorization.

51465623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246277.

The product of its digits is 21600, while the sum is 32.

The square root of 51465623 is about 7173.9544882861. The cubic root of 51465623 is about 371.9681414695.

The spelling of 51465623 in words is "fifty-one million, four hundred sixty-five thousand, six hundred twenty-three".