126572503 has 4 divisors (see below), whose sum is σ = 126595648. Its totient is φ = 126549360.

The previous prime is 126572491. The next prime is 126572513. The reversal of 126572503 is 305275621.

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

It is a cyclic number.

It is not a de Polignac number, because 126572503 - 2¹⁷ = 126441431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126572513) 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, 1723 + ... + 16003.

It is an arithmetic number, because the mean of its divisors is an integer number (31648912).

Almost surely, 2^126572503 is an apocalyptic number.

126572503 is a deficient number, since it is larger than the sum of its proper divisors (23145).

126572503 is an equidigital number, since it uses as much as digits as its factorization.

126572503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23144.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 126572503 is about 11250.4445689937. Note that the first 3 decimals coincide. The cubic root of 126572503 is about 502.0879395471.

The spelling of 126572503 in words is "one hundred twenty-six million, five hundred seventy-two thousand, five hundred three".