51616671 has 8 divisors (see below), whose sum is σ = 68941824. Its totient is φ = 34351320.

The previous prime is 51616667. The next prime is 51616679. The reversal of 51616671 is 17661615.

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

It is not a de Polignac number, because 51616671 - 2² = 51616667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51616679) 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, 12895 + ... + 16416.

It is an arithmetic number, because the mean of its divisors is an integer number (8617728).

Almost surely, 2^51616671 is an apocalyptic number.

51616671 is a deficient number, since it is larger than the sum of its proper divisors (17325153).

51616671 is a wasteful number, since it uses less digits than its factorization.

51616671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29901.

The product of its digits is 7560, while the sum is 33.

The square root of 51616671 is about 7184.4743022715. The cubic root of 51616671 is about 372.3316861919.

The spelling of 51616671 in words is "fifty-one million, six hundred sixteen thousand, six hundred seventy-one".