5197015521 has 6 divisors (see below), whose sum is σ = 7506800210. Its totient is φ = 3464677008.

The previous prime is 5197015513. The next prime is 5197015529. The reversal of 5197015521 is 1255107915.

5197015521 is a `hidden beast` number, since 51 + 9 + 70 + 15 + 521 = 666.

It is an interprime number because it is at equal distance from previous prime (5197015513) and next prime (5197015529).

It can be written as a sum of positive squares in only one way, i.e., 2728913121 + 2468102400 = 52239^2 + 49680^2 .

It is not a de Polignac number, because 5197015521 - 2³ = 5197015513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5197015529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288723076 + ... + 288723093.

Almost surely, 2^5197015521 is an apocalyptic number.

It is an amenable number.

5197015521 is a deficient number, since it is larger than the sum of its proper divisors (2309784689).

5197015521 is a wasteful number, since it uses less digits than its factorization.

5197015521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577446175 (or 577446172 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 36.

The square root of 5197015521 is about 72090.3289006230. The cubic root of 5197015521 is about 1732.1467020700.

The spelling of 5197015521 in words is "five billion, one hundred ninety-seven million, fifteen thousand, five hundred twenty-one".