153553 has 4 divisors (see below), whose sum is σ = 157168. Its totient is φ = 149940.

The previous prime is 153533. The next prime is 153557. The reversal of 153553 is 355351.

It is a happy number.

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: 355351 = 17 ⋅20903.

It is a cyclic number.

It is not a de Polignac number, because 153553 - 2⁵ = 153521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153557) 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, 1743 + ... + 1828.

It is an arithmetic number, because the mean of its divisors is an integer number (39292).

2¹⁵³⁵⁵³ is an apocalyptic number.

It is an amenable number.

153553 is a deficient number, since it is larger than the sum of its proper divisors (3615).

153553 is an equidigital number, since it uses as much as digits as its factorization.

153553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3614.

The product of its digits is 1125, while the sum is 22.

The square root of 153553 is about 391.8583927900. The cubic root of 153553 is about 53.5491730624.

The spelling of 153553 in words is "one hundred fifty-three thousand, five hundred fifty-three".