51694850 has 48 divisors (see below), whose sum is σ = 99743616. Its totient is φ = 19920000.

The previous prime is 51694847. The next prime is 51694859. The reversal of 51694850 is 5849615.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51694859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 309467 + ... + 309633.

It is an arithmetic number, because the mean of its divisors is an integer number (2077992).

Almost surely, 2^51694850 is an apocalyptic number.

51694850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51694850 is a deficient number, since it is larger than the sum of its proper divisors (48048766).

51694850 is a wasteful number, since it uses less digits than its factorization.

51694850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 51694850 is about 7189.9130731880. The cubic root of 51694850 is about 372.5195701623.

The spelling of 51694850 in words is "fifty-one million, six hundred ninety-four thousand, eight hundred fifty".