1252521 has 6 divisors (see below), whose sum is σ = 1809210. Its totient is φ = 835008.

The previous prime is 1252507. The next prime is 1252523.

1252521 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 1022121 + 230400 = 1011^2 + 480^2 .

It is not a de Polignac number, because 1252521 - 2⁶ = 1252457 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1252494 and 1252503.

It is not an unprimeable number, because it can be changed into a prime (1252523) 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, 69576 + ... + 69593.

It is an arithmetic number, because the mean of its divisors is an integer number (301535).

2^1252521 is an apocalyptic number.

It is an amenable number.

1252521 is a deficient number, since it is larger than the sum of its proper divisors (556689).

1252521 is a wasteful number, since it uses less digits than its factorization.

1252521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139175 (or 139172 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 1252521 is about 1119.1608463487. The cubic root of 1252521 is about 107.7941036034.

The spelling of 1252521 in words is "one million, two hundred fifty-two thousand, five hundred twenty-one".