5257197928 has 8 divisors (see below), whose sum is σ = 9857246130. Its totient is φ = 2628598960.

The previous prime is 5257197901. The next prime is 5257197943. The reversal of 5257197928 is 8297917525.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5052650724 + 204547204 = 71082^2 + 14302^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328574863 + ... + 328574878.

Almost surely, 2^5257197928 is an apocalyptic number.

It is an amenable number.

5257197928 is a deficient number, since it is larger than the sum of its proper divisors (4600048202).

5257197928 is a wasteful number, since it uses less digits than its factorization.

5257197928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657149747 (or 657149743 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 55.

The square root of 5257197928 is about 72506.5371397642. The cubic root of 5257197928 is about 1738.8072514498.

The spelling of 5257197928 in words is "five billion, two hundred fifty-seven million, one hundred ninety-seven thousand, nine hundred twenty-eight".