51120471 has 8 divisors (see below), whose sum is σ = 68241024. Its totient is φ = 34040120.

The previous prime is 51120463. The next prime is 51120527. The reversal of 51120471 is 17402115.

It is a happy number.

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 51120471 - 2³ = 51120463 is a prime.

It is a super-3 number, since 3×51120471³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51120571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6945 + ... + 12266.

It is an arithmetic number, because the mean of its divisors is an integer number (8530128).

Almost surely, 2^51120471 is an apocalyptic number.

51120471 is a deficient number, since it is larger than the sum of its proper divisors (17120553).

51120471 is a wasteful number, since it uses less digits than its factorization.

51120471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20101.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 51120471 is about 7149.8581104802. The cubic root of 51120471 is about 371.1347461617.

Adding to 51120471 its reverse (17402115), we get a palindrome (68522586).

The spelling of 51120471 in words is "fifty-one million, one hundred twenty thousand, four hundred seventy-one".