51230005 has 8 divisors (see below), whose sum is σ = 61514424. Its totient is φ = 40958400.

The previous prime is 51229987. The next prime is 51230021. The reversal of 51230005 is 50003215.

It can be written as a sum of positive squares in 4 ways, for example, as 2244004 + 48986001 = 1498^2 + 6999^2 .

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

It is not a de Polignac number, because 51230005 - 2¹³ = 51221813 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 7 ways as a sum of consecutive naturals, for example, 14295 + ... + 17515.

It is an arithmetic number, because the mean of its divisors is an integer number (7689303).

Almost surely, 2^51230005 is an apocalyptic number.

It is an amenable number.

51230005 is a deficient number, since it is larger than the sum of its proper divisors (10284419).

51230005 is a wasteful number, since it uses less digits than its factorization.

51230005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6407.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 51230005 is about 7157.5138840243. The cubic root of 51230005 is about 371.3996294369.

The spelling of 51230005 in words is "fifty-one million, two hundred thirty thousand, five".