5751521 has 4 divisors (see below), whose sum is σ = 5891844. Its totient is φ = 5611200.

The previous prime is 5751517. The next prime is 5751527. The reversal of 5751521 is 1251575.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2217121 + 3534400 = 1489^2 + 1880^2 .

It is a cyclic number.

It is not a de Polignac number, because 5751521 - 2² = 5751517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5751527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70100 + ... + 70181.

It is an arithmetic number, because the mean of its divisors is an integer number (1472961).

Almost surely, 2^5751521 is an apocalyptic number.

It is an amenable number.

5751521 is a deficient number, since it is larger than the sum of its proper divisors (140323).

5751521 is a wasteful number, since it uses less digits than its factorization.

5751521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140322.

The product of its digits is 1750, while the sum is 26.

The square root of 5751521 is about 2398.2328911096. The cubic root of 5751521 is about 179.1681887257.

The spelling of 5751521 in words is "five million, seven hundred fifty-one thousand, five hundred twenty-one".