4757521 has 2 divisors, whose sum is σ = 4757522. Its totient is φ = 4757520.

The previous prime is 4757507. The next prime is 4757531. The reversal of 4757521 is 1257574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4730625 + 26896 = 2175^2 + 164^2 .

It is a cyclic number.

It is not a de Polignac number, because 4757521 - 2⁷ = 4757393 is a prime.

It is not a weakly prime, because it can be changed into another prime (4757531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2378760 + 2378761.

It is an arithmetic number, because the mean of its divisors is an integer number (2378761).

Almost surely, 2^4757521 is an apocalyptic number.

It is an amenable number.

4757521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4757521 is an equidigital number, since it uses as much as digits as its factorization.

4757521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9800, while the sum is 31.

The square root of 4757521 is about 2181.1742250448. The cubic root of 4757521 is about 168.1874443167.

The spelling of 4757521 in words is "four million, seven hundred fifty-seven thousand, five hundred twenty-one".