136553 has 4 divisors (see below), whose sum is σ = 143760. Its totient is φ = 129348.

The previous prime is 136547. The next prime is 136559. The reversal of 136553 is 355631.

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, and also an emirpimes, since its reverse is a distinct semiprime: 355631 = 349 ⋅1019.

It is an interprime number because it is at equal distance from previous prime (136547) and next prime (136559).

It is a cyclic number.

It is not a de Polignac number, because 136553 - 2⁴ = 136537 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (136559) 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, 3575 + ... + 3612.

It is an arithmetic number, because the mean of its divisors is an integer number (35940).

2¹³⁶⁵⁵³ is an apocalyptic number.

It is an amenable number.

136553 is a deficient number, since it is larger than the sum of its proper divisors (7207).

136553 is an equidigital number, since it uses as much as digits as its factorization.

136553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7206.

The product of its digits is 1350, while the sum is 23.

The square root of 136553 is about 369.5307835621. The cubic root of 136553 is about 51.4952394506.

The spelling of 136553 in words is "one hundred thirty-six thousand, five hundred fifty-three".