51105693 has 8 divisors (see below), whose sum is σ = 68184288. Its totient is φ = 34048784.

The previous prime is 51105667. The next prime is 51105707. The reversal of 51105693 is 39650115.

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 51105693 - 2¹² = 51101597 is a prime.

It is a super-2 number, since 2×51105693² = 5223583714020498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51105693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51105643) 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, 1255 + ... + 10187.

It is an arithmetic number, because the mean of its divisors is an integer number (8523036).

Almost surely, 2^51105693 is an apocalyptic number.

It is an amenable number.

51105693 is a deficient number, since it is larger than the sum of its proper divisors (17078595).

51105693 is a wasteful number, since it uses less digits than its factorization.

51105693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10843.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 51105693 is about 7148.8245886999. The cubic root of 51105693 is about 371.0989799428.

The spelling of 51105693 in words is "fifty-one million, one hundred five thousand, six hundred ninety-three".