12509057 has 8 divisors (see below), whose sum is σ = 13724640. Its totient is φ = 11306560.

The previous prime is 12509009. The next prime is 12509083. The reversal of 12509057 is 75090521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12509057 - 2¹⁶ = 12443521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12509857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1208 + ... + 5145.

It is an arithmetic number, because the mean of its divisors is an integer number (1715580).

Almost surely, 2^12509057 is an apocalyptic number.

It is an amenable number.

12509057 is a deficient number, since it is larger than the sum of its proper divisors (1215583).

12509057 is a wasteful number, since it uses less digits than its factorization.

12509057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6543.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 12509057 is about 3536.8145272264. The cubic root of 12509057 is about 232.1354799752.

Adding to 12509057 its reverse (75090521), we get a palindrome (87599578).

The spelling of 12509057 in words is "twelve million, five hundred nine thousand, fifty-seven".