51929747 has 4 divisors (see below), whose sum is σ = 54984456. Its totient is φ = 48875040.

The previous prime is 51929737. The next prime is 51929753. The reversal of 51929747 is 74792915.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51929747 - 2¹⁴ = 51913363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51929698 and 51929707.

It is not an unprimeable number, because it can be changed into a prime (51929737) 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, 1527329 + ... + 1527362.

It is an arithmetic number, because the mean of its divisors is an integer number (13746114).

Almost surely, 2^51929747 is an apocalyptic number.

51929747 is a deficient number, since it is larger than the sum of its proper divisors (3054709).

51929747 is a wasteful number, since it uses less digits than its factorization.

51929747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3054708.

The product of its digits is 158760, while the sum is 44.

The square root of 51929747 is about 7206.2297354442. The cubic root of 51929747 is about 373.0829501156.

The spelling of 51929747 in words is "fifty-one million, nine hundred twenty-nine thousand, seven hundred forty-seven".