126355513 has 4 divisors (see below), whose sum is σ = 126385920. Its totient is φ = 126325108.

The previous prime is 126355507. The next prime is 126355517. The reversal of 126355513 is 315553621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126355513 - 2²¹ = 124258361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126355517) 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, 7753 + ... + 17686.

It is an arithmetic number, because the mean of its divisors is an integer number (31596480).

Almost surely, 2^126355513 is an apocalyptic number.

It is an amenable number.

126355513 is a deficient number, since it is larger than the sum of its proper divisors (30407).

126355513 is an equidigital number, since it uses as much as digits as its factorization.

126355513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30406.

The product of its digits is 13500, while the sum is 31.

The square root of 126355513 is about 11240.7968133936. The cubic root of 126355513 is about 501.8008567098.

The spelling of 126355513 in words is "one hundred twenty-six million, three hundred fifty-five thousand, five hundred thirteen".