126551323 has 4 divisors (see below), whose sum is σ = 128333808. Its totient is φ = 124768840.

The previous prime is 126551311. The next prime is 126551351. The reversal of 126551323 is 323155621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323155621 = 43 ⋅7515247.

It is a cyclic number.

It is not a de Polignac number, because 126551323 - 2⁵ = 126551291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126551291 and 126551300.

It is not an unprimeable number, because it can be changed into a prime (126551303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891136 + ... + 891277.

It is an arithmetic number, because the mean of its divisors is an integer number (32083452).

Almost surely, 2^126551323 is an apocalyptic number.

126551323 is a deficient number, since it is larger than the sum of its proper divisors (1782485).

126551323 is an equidigital number, since it uses as much as digits as its factorization.

126551323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782484.

The product of its digits is 5400, while the sum is 28.

The square root of 126551323 is about 11249.5032334766. The cubic root of 126551323 is about 502.0599323693.

The spelling of 126551323 in words is "one hundred twenty-six million, five hundred fifty-one thousand, three hundred twenty-three".