1252539 has 12 divisors (see below), whose sum is σ = 1872000. Its totient is φ = 806064.

The previous prime is 1252523. The next prime is 1252579. The reversal of 1252539 is 9352521.

1252539 = T₂₉₁ + T₂₉₂ + ... + T₃₁₇.

1252539 = 125² + 126² + ... + 178².

1252539 is a `hidden beast` number, since 125 + 2 + 539 = 666.

It is not a de Polignac number, because 1252539 - 2⁴ = 1252523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1252579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2139 + ... + 2660.

It is an arithmetic number, because the mean of its divisors is an integer number (156000).

2^1252539 is an apocalyptic number.

1252539 is a deficient number, since it is larger than the sum of its proper divisors (619461).

1252539 is a wasteful number, since it uses less digits than its factorization.

1252539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4834 (or 4831 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 1252539 is about 1119.1688880593. The cubic root of 1252539 is about 107.7946199712.

The spelling of 1252539 in words is "one million, two hundred fifty-two thousand, five hundred thirty-nine".