155430453 has 4 divisors (see below), whose sum is σ = 207240608. Its totient is φ = 103620300.

The previous prime is 155430449. The next prime is 155430463. The reversal of 155430453 is 354034551.

155430453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 155430453 - 2² = 155430449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155430453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155430413) 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, 25905073 + ... + 25905078.

It is an arithmetic number, because the mean of its divisors is an integer number (51810152).

Almost surely, 2^155430453 is an apocalyptic number.

It is an amenable number.

155430453 is a deficient number, since it is larger than the sum of its proper divisors (51810155).

155430453 is an equidigital number, since it uses as much as digits as its factorization.

155430453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51810154.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 155430453 is about 12467.1750208297. The cubic root of 155430453 is about 537.6653356886.

The spelling of 155430453 in words is "one hundred fifty-five million, four hundred thirty thousand, four hundred fifty-three".