135564554 has 4 divisors (see below), whose sum is σ = 203346834. Its totient is φ = 67782276.

The previous prime is 135564529. The next prime is 135564607. The reversal of 135564554 is 455465531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 455465531 = 67 ⋅6797993.

It can be written as a sum of positive squares in only one way, i.e., 76965529 + 58599025 = 8773^2 + 7655^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33891137 + ... + 33891140.

Almost surely, 2^135564554 is an apocalyptic number.

135564554 is a deficient number, since it is larger than the sum of its proper divisors (67782280).

135564554 is an equidigital number, since it uses as much as digits as its factorization.

135564554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67782279.

The product of its digits is 180000, while the sum is 38.

The square root of 135564554 is about 11643.2192283749. The cubic root of 135564554 is about 513.7068811774.

The spelling of 135564554 in words is "one hundred thirty-five million, five hundred sixty-four thousand, five hundred fifty-four".