51384629 has 4 divisors (see below), whose sum is σ = 51408576. Its totient is φ = 51360684.

The previous prime is 51384611. The next prime is 51384637. The reversal of 51384629 is 92648315.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51384629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51384592 and 51384601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51384679) 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, 8399 + ... + 13164.

It is an arithmetic number, because the mean of its divisors is an integer number (12852144).

Almost surely, 2^51384629 is an apocalyptic number.

It is an amenable number.

51384629 is a deficient number, since it is larger than the sum of its proper divisors (23947).

51384629 is a wasteful number, since it uses less digits than its factorization.

51384629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23946.

The product of its digits is 51840, while the sum is 38.

The square root of 51384629 is about 7168.3072618297. The cubic root of 51384629 is about 371.7729107896.

The spelling of 51384629 in words is "fifty-one million, three hundred eighty-four thousand, six hundred twenty-nine".