5743972521 has 63 divisors (see below), whose sum is σ = 10043108103. Its totient is φ = 3274084800.

The previous prime is 5743972489. The next prime is 5743972523. The reversal of 5743972521 is 1252793475.

It is a happy number.

The square root of 5743972521 is 75789.

It is a perfect power (a square), and thus also a powerful number.

5743972521 is a `hidden beast` number, since 5 + 7 + 4 + 397 + 252 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5686818921 + 57153600 = 75411^2 + 7560^2 .

It is a tau number, because it is divible by the number of its divisors (63).

It is not a de Polignac number, because 5743972521 - 2⁵ = 5743972489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5743972523) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 14323921 + ... + 14324321.

Almost surely, 2^5743972521 is an apocalyptic number.

5743972521 is the 75789-th square number.

5743972521 is the 37895-th centered octagonal number.

It is an amenable number.

5743972521 is a deficient number, since it is larger than the sum of its proper divisors (4299135582).

5743972521 is an frugal number, since it uses more digits than its factorization.

5743972521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834 (or 411 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The cubic root of 5743972521 is about 1790.8977240149.

The spelling of 5743972521 in words is "five billion, seven hundred forty-three million, nine hundred seventy-two thousand, five hundred twenty-one".