51660123 has 8 divisors (see below), whose sum is σ = 70560336. Its totient is φ = 33600000.

The previous prime is 51660073. The next prime is 51660137. The reversal of 51660123 is 32106615.

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

It is not a de Polignac number, because 51660123 - 2¹² = 51656027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51660093 and 51660102.

It is not an unprimeable number, because it can be changed into a prime (51660173) 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, 209878 + ... + 210123.

It is an arithmetic number, because the mean of its divisors is an integer number (8820042).

Almost surely, 2^51660123 is an apocalyptic number.

51660123 is a deficient number, since it is larger than the sum of its proper divisors (18900213).

51660123 is a wasteful number, since it uses less digits than its factorization.

51660123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420045.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 51660123 is about 7187.4976869561. The cubic root of 51660123 is about 372.4361357714.

Adding to 51660123 its reverse (32106615), we get a palindrome (83766738).

The spelling of 51660123 in words is "fifty-one million, six hundred sixty thousand, one hundred twenty-three".