126554 has 4 divisors (see below), whose sum is σ = 189834. Its totient is φ = 63276.

The previous prime is 126551. The next prime is 126583. The reversal of 126554 is 455621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 455621 = 673 ⋅677.

It can be written as a sum of positive squares in only one way, i.e., 126025 + 529 = 355^2 + 23^2 .

It is a Curzon number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (126551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31637 + ... + 31640.

2¹²⁶⁵⁵⁴ is an apocalyptic number.

126554 is a deficient number, since it is larger than the sum of its proper divisors (63280).

126554 is an equidigital number, since it uses as much as digits as its factorization.

126554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63279.

The product of its digits is 1200, while the sum is 23.

The square root of 126554 is about 355.7442901861. The cubic root of 126554 is about 50.2063472448.

The spelling of 126554 in words is "one hundred twenty-six thousand, five hundred fifty-four".