51699406 has 8 divisors (see below), whose sum is σ = 84599064. Its totient is φ = 23499720.

The previous prime is 51699383. The next prime is 51699407. The reversal of 51699406 is 60499615.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51699407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174965 + ... + 1175008.

It is an arithmetic number, because the mean of its divisors is an integer number (10574883).

Almost surely, 2^51699406 is an apocalyptic number.

51699406 is a deficient number, since it is larger than the sum of its proper divisors (32899658).

51699406 is a wasteful number, since it uses less digits than its factorization.

51699406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2349986.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 51699406 is about 7190.2298989671. The cubic root of 51699406 is about 372.5305135432.

The spelling of 51699406 in words is "fifty-one million, six hundred ninety-nine thousand, four hundred six".