51616611 has 6 divisors (see below), whose sum is σ = 74557340. Its totient is φ = 34411068.

The previous prime is 51616583. The next prime is 51616667. The reversal of 51616611 is 11661615.

It is not a de Polignac number, because 51616611 - 2⁶ = 51616547 is a prime.

It is a super-2 number, since 2×51616611² = 5328549062250642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51611611) 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, 2867581 + ... + 2867598.

Almost surely, 2^51616611 is an apocalyptic number.

51616611 is a deficient number, since it is larger than the sum of its proper divisors (22940729).

51616611 is a wasteful number, since it uses less digits than its factorization.

51616611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735185 (or 5735182 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 51616611 is about 7184.4701265995. The cubic root of 51616611 is about 372.3315419239.

The spelling of 51616611 in words is "fifty-one million, six hundred sixteen thousand, six hundred eleven".