5210057661 has 4 divisors (see below), whose sum is σ = 6946743552. Its totient is φ = 3473371772.

The previous prime is 5210057647. The next prime is 5210057689. The reversal of 5210057661 is 1667500125.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5210057661 - 2⁷ = 5210057533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5210057261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 868342941 + ... + 868342946.

It is an arithmetic number, because the mean of its divisors is an integer number (1736685888).

Almost surely, 2^5210057661 is an apocalyptic number.

It is an amenable number.

5210057661 is a deficient number, since it is larger than the sum of its proper divisors (1736685891).

5210057661 is a wasteful number, since it uses less digits than its factorization.

5210057661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736685890.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 5210057661 is about 72180.7291525931. The cubic root of 5210057661 is about 1733.5944578945.

Adding to 5210057661 its reverse (1667500125), we get a palindrome (6877557786).

The spelling of 5210057661 in words is "five billion, two hundred ten million, fifty-seven thousand, six hundred sixty-one".