51605692 has 6 divisors (see below), whose sum is σ = 90309968. Its totient is φ = 25802844.

The previous prime is 51605683. The next prime is 51605699. The reversal of 51605692 is 29650615.

It is a happy number.

51605692 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51605699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6450708 + ... + 6450715.

Almost surely, 2^51605692 is an apocalyptic number.

It is an amenable number.

51605692 is a deficient number, since it is larger than the sum of its proper divisors (38704276).

51605692 is a wasteful number, since it uses less digits than its factorization.

51605692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12901427 (or 12901425 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 51605692 is about 7183.7101834637. The cubic root of 51605692 is about 372.3052856811.

The spelling of 51605692 in words is "fifty-one million, six hundred five thousand, six hundred ninety-two".