51617612 has 12 divisors (see below), whose sum is σ = 94258416. Its totient is φ = 24686640.

The previous prime is 51617611. The next prime is 51617633. The reversal of 51617612 is 21671615.

It is not an unprimeable number, because it can be changed into a prime (51617611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280439 + ... + 280622.

It is an arithmetic number, because the mean of its divisors is an integer number (7854868).

Almost surely, 2^51617612 is an apocalyptic number.

It is an amenable number.

51617612 is a deficient number, since it is larger than the sum of its proper divisors (42640804).

51617612 is a wasteful number, since it uses less digits than its factorization.

51617612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561088 (or 561086 counting only the distinct ones).

The product of its digits is 2520, while the sum is 29.

The square root of 51617612 is about 7184.5397904111. The cubic root of 51617612 is about 372.3339487813. Note that the first 3 decimals are identical.

The spelling of 51617612 in words is "fifty-one million, six hundred seventeen thousand, six hundred twelve".