51882661 has 2 divisors, whose sum is σ = 51882662. Its totient is φ = 51882660.

The previous prime is 51882659. The next prime is 51882751. The reversal of 51882661 is 16628815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49420900 + 2461761 = 7030^2 + 1569^2 .

It is a cyclic number.

It is not a de Polignac number, because 51882661 - 2¹ = 51882659 is a prime.

Together with 51882659, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51882661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51882631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25941330 + 25941331.

It is an arithmetic number, because the mean of its divisors is an integer number (25941331).

Almost surely, 2^51882661 is an apocalyptic number.

It is an amenable number.

51882661 is a deficient number, since it is larger than the sum of its proper divisors (1).

51882661 is an equidigital number, since it uses as much as digits as its factorization.

51882661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 37.

The square root of 51882661 is about 7202.9619601939. The cubic root of 51882661 is about 372.9701548043.

The spelling of 51882661 in words is "fifty-one million, eight hundred eighty-two thousand, six hundred sixty-one".