51272427 has 8 divisors (see below), whose sum is σ = 70030800. Its totient is φ = 33347840.

The previous prime is 51272399. The next prime is 51272443. The reversal of 51272427 is 72427215.

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 51272427 - 2²² = 47078123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51272394 and 51272403.

It is not an unprimeable number, because it can be changed into a prime (51272227) 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, 208302 + ... + 208547.

It is an arithmetic number, because the mean of its divisors is an integer number (8753850).

Almost surely, 2^51272427 is an apocalyptic number.

51272427 is a deficient number, since it is larger than the sum of its proper divisors (18758373).

51272427 is a wasteful number, since it uses less digits than its factorization.

51272427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416893.

The product of its digits is 7840, while the sum is 30.

The square root of 51272427 is about 7160.4767299391. The cubic root of 51272427 is about 371.5021160441.

The spelling of 51272427 in words is "fifty-one million, two hundred seventy-two thousand, four hundred twenty-seven".