51027145 has 8 divisors (see below), whose sum is σ = 65942856. Its totient is φ = 37681536.

The previous prime is 51027143. The next prime is 51027167. The reversal of 51027145 is 54172015.

It can be written as a sum of positive squares in 4 ways, for example, as 5707321 + 45319824 = 2389^2 + 6732^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51027145 - 2¹ = 51027143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51027143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392452 + ... + 392581.

It is an arithmetic number, because the mean of its divisors is an integer number (8242857).

Almost surely, 2^51027145 is an apocalyptic number.

It is an amenable number.

51027145 is a deficient number, since it is larger than the sum of its proper divisors (14915711).

51027145 is a wasteful number, since it uses less digits than its factorization.

51027145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785051.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 51027145 is about 7143.3287058626. The cubic root of 51027145 is about 370.9087595877.

The spelling of 51027145 in words is "fifty-one million, twenty-seven thousand, one hundred forty-five".