51642105 has 8 divisors (see below), whose sum is σ = 82627392. Its totient is φ = 27542448.

The previous prime is 51642091. The next prime is 51642109. The reversal of 51642105 is 50124615.

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

It is not a de Polignac number, because 51642105 - 2⁴ = 51642089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51642109) 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, 1721389 + ... + 1721418.

It is an arithmetic number, because the mean of its divisors is an integer number (10328424).

Almost surely, 2^51642105 is an apocalyptic number.

It is an amenable number.

51642105 is a deficient number, since it is larger than the sum of its proper divisors (30985287).

51642105 is a wasteful number, since it uses less digits than its factorization.

51642105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442815.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 51642105 is about 7186.2441511543. The cubic root of 51642105 is about 372.3928313538.

The spelling of 51642105 in words is "fifty-one million, six hundred forty-two thousand, one hundred five".