51617673 has 12 divisors (see below), whose sum is σ = 76293360. Its totient is φ = 33611256.

The previous prime is 51617663. The next prime is 51617711. The reversal of 51617673 is 37671615.

51617673 is a `hidden beast` number, since 516 + 1 + 76 + 73 = 666.

It is not a de Polignac number, because 51617673 - 2⁸ = 51617417 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51617633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66303 + ... + 67076.

It is an arithmetic number, because the mean of its divisors is an integer number (6357780).

Almost surely, 2^51617673 is an apocalyptic number.

It is an amenable number.

51617673 is a deficient number, since it is larger than the sum of its proper divisors (24675687).

51617673 is a wasteful number, since it uses less digits than its factorization.

51617673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133428 (or 133425 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 51617673 is about 7184.5440356365. The cubic root of 51617673 is about 372.3340954519.

The spelling of 51617673 in words is "fifty-one million, six hundred seventeen thousand, six hundred seventy-three".