51470005 has 4 divisors (see below), whose sum is σ = 61764012. Its totient is φ = 41176000.

The previous prime is 51469973. The next prime is 51470009. The reversal of 51470005 is 50007415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50007415 = 5 ⋅10001483.

It can be written as a sum of positive squares in 2 ways, for example, as 34774609 + 16695396 = 5897^2 + 4086^2 .

It is not a de Polignac number, because 51470005 - 2⁵ = 51469973 is a prime.

It is a super-2 number, since 2×51470005² = 5298322829400050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51470009) 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, 5146996 + ... + 5147005.

It is an arithmetic number, because the mean of its divisors is an integer number (15441003).

Almost surely, 2^51470005 is an apocalyptic number.

It is an amenable number.

51470005 is a deficient number, since it is larger than the sum of its proper divisors (10294007).

51470005 is a wasteful number, since it uses less digits than its factorization.

51470005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10294006.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 51470005 is about 7174.2598921422. The cubic root of 51470005 is about 371.9786981482.

The spelling of 51470005 in words is "fifty-one million, four hundred seventy thousand, five".