51652647 has 20 divisors (see below), whose sum is σ = 81701136. Its totient is φ = 32408640.

The previous prime is 51652637. The next prime is 51652651. The reversal of 51652647 is 74625615.

It is a happy number.

51652647 is a `hidden beast` number, since 5 + 1 + 6 + 5 + 2 + 647 = 666.

It is not a de Polignac number, because 51652647 - 2¹⁰ = 51651623 is a prime.

It is a super-3 number, since 3×51652647³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51652607) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17379 + ... + 20132.

Almost surely, 2^51652647 is an apocalyptic number.

51652647 is a deficient number, since it is larger than the sum of its proper divisors (30048489).

51652647 is a wasteful number, since it uses less digits than its factorization.

51652647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37540 (or 37531 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 51652647 is about 7186.9775984067. The cubic root of 51652647 is about 372.4181691935.

The spelling of 51652647 in words is "fifty-one million, six hundred fifty-two thousand, six hundred forty-seven".