51146427 has 8 divisors (see below), whose sum is σ = 68310016. Its totient is φ = 34040232.

The previous prime is 51146419. The next prime is 51146449. The reversal of 51146427 is 72464115.

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

It is not a de Polignac number, because 51146427 - 2³ = 51146419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51146394 and 51146403.

It is not an unprimeable number, because it can be changed into a prime (51146467) 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, 12223 + ... + 15864.

It is an arithmetic number, because the mean of its divisors is an integer number (8538752).

Almost surely, 2^51146427 is an apocalyptic number.

51146427 is a deficient number, since it is larger than the sum of its proper divisors (17163589).

51146427 is a wasteful number, since it uses less digits than its factorization.

51146427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28697.

The product of its digits is 6720, while the sum is 30.

The square root of 51146427 is about 7151.6730210490. The cubic root of 51146427 is about 371.1975490751.

The spelling of 51146427 in words is "fifty-one million, one hundred forty-six thousand, four hundred twenty-seven".