51605134 has 12 divisors (see below), whose sum is σ = 90045864. Its totient is φ = 22116444.

The previous prime is 51605131. The next prime is 51605153. The reversal of 51605134 is 43150615.

It is a junction number, because it is equal to n+sod(n) for n = 51605099 and 51605108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51605131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 263194 + ... + 263389.

It is an arithmetic number, because the mean of its divisors is an integer number (7503822).

Almost surely, 2^51605134 is an apocalyptic number.

51605134 is a deficient number, since it is larger than the sum of its proper divisors (38440730).

51605134 is a wasteful number, since it uses less digits than its factorization.

51605134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526599 (or 526592 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 51605134 is about 7183.6713454890. The cubic root of 51605134 is about 372.3039437936.

Adding to 51605134 its reverse (43150615), we get a palindrome (94755749).

The spelling of 51605134 in words is "fifty-one million, six hundred five thousand, one hundred thirty-four".