51027645 has 8 divisors (see below), whose sum is σ = 81644256. Its totient is φ = 27214736.

The previous prime is 51027637. The next prime is 51027649. The reversal of 51027645 is 54672015.

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 51027645 - 2³ = 51027637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51027649) 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, 1700907 + ... + 1700936.

It is an arithmetic number, because the mean of its divisors is an integer number (10205532).

Almost surely, 2^51027645 is an apocalyptic number.

It is an amenable number.

51027645 is a deficient number, since it is larger than the sum of its proper divisors (30616611).

51027645 is a wasteful number, since it uses less digits than its factorization.

51027645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3401851.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 51027645 is about 7143.3637034663. The cubic root of 51027645 is about 370.9099710591.

The spelling of 51027645 in words is "fifty-one million, twenty-seven thousand, six hundred forty-five".