51747005 has 4 divisors (see below), whose sum is σ = 62096412. Its totient is φ = 41397600.

The previous prime is 51746983. The next prime is 51747037. The reversal of 51747005 is 50074715.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36168196 + 15578809 = 6014^2 + 3947^2 .

It is not a de Polignac number, because 51747005 - 2¹⁴ = 51730621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5174696 + ... + 5174705.

It is an arithmetic number, because the mean of its divisors is an integer number (15524103).

Almost surely, 2^51747005 is an apocalyptic number.

It is an amenable number.

51747005 is a deficient number, since it is larger than the sum of its proper divisors (10349407).

51747005 is a wasteful number, since it uses less digits than its factorization.

51747005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10349406.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 51747005 is about 7193.5391150671. The cubic root of 51747005 is about 372.6448065443.

The spelling of 51747005 in words is "fifty-one million, seven hundred forty-seven thousand, five".