155306453 has 4 divisors (see below), whose sum is σ = 155605068. Its totient is φ = 155007840.

The previous prime is 155306449. The next prime is 155306461. The reversal of 155306453 is 354603551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354603551 = 2879 ⋅123169.

It can be written as a sum of positive squares in 2 ways, for example, as 94809169 + 60497284 = 9737^2 + 7778^2 .

It is a cyclic number.

It is not a de Polignac number, because 155306453 - 2² = 155306449 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155303453) 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, 148526 + ... + 149567.

It is an arithmetic number, because the mean of its divisors is an integer number (38901267).

Almost surely, 2^155306453 is an apocalyptic number.

It is an amenable number.

155306453 is a deficient number, since it is larger than the sum of its proper divisors (298615).

155306453 is an equidigital number, since it uses as much as digits as its factorization.

155306453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298614.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 155306453 is about 12462.2009693312. The cubic root of 155306453 is about 537.5223172994.

The spelling of 155306453 in words is "one hundred fifty-five million, three hundred six thousand, four hundred fifty-three".