51646652 has 12 divisors (see below), whose sum is σ = 90527136. Its totient is φ = 25781760.

The previous prime is 51646649. The next prime is 51646657. The reversal of 51646652 is 25664615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51646657) 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, 7508 + ... + 12635.

It is an arithmetic number, because the mean of its divisors is an integer number (7543928).

Almost surely, 2^51646652 is an apocalyptic number.

It is an amenable number.

51646652 is a deficient number, since it is larger than the sum of its proper divisors (38880484).

51646652 is a wasteful number, since it uses less digits than its factorization.

51646652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20788 (or 20786 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 51646652 is about 7186.5605125122. The cubic root of 51646652 is about 372.4037605527.

The spelling of 51646652 in words is "fifty-one million, six hundred forty-six thousand, six hundred fifty-two".