51617667 has 8 divisors (see below), whose sum is σ = 68857024. Its totient is φ = 34395048.

The previous prime is 51617663. The next prime is 51617711. The reversal of 51617667 is 76671615.

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

It is not a de Polignac number, because 51617667 - 2² = 51617663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51617663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8568 + ... + 13290.

It is an arithmetic number, because the mean of its divisors is an integer number (8607128).

Almost surely, 2^51617667 is an apocalyptic number.

51617667 is a deficient number, since it is larger than the sum of its proper divisors (17239357).

51617667 is a wasteful number, since it uses less digits than its factorization.

51617667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8369.

The product of its digits is 52920, while the sum is 39.

The square root of 51617667 is about 7184.5436180735. The cubic root of 51617667 is about 372.3340810253.

The spelling of 51617667 in words is "fifty-one million, six hundred seventeen thousand, six hundred sixty-seven".