155030453 has 4 divisors (see below), whose sum is σ = 156145920. Its totient is φ = 153914988.

The previous prime is 155030431. The next prime is 155030501. The reversal of 155030453 is 354030551.

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: 354030551 = 7 ⋅50575793.

It is a cyclic number.

It is not a de Polignac number, because 155030453 - 2¹² = 155026357 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 (155030423) 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, 557525 + ... + 557802.

It is an arithmetic number, because the mean of its divisors is an integer number (39036480).

Almost surely, 2^155030453 is an apocalyptic number.

It is an amenable number.

155030453 is a deficient number, since it is larger than the sum of its proper divisors (1115467).

155030453 is a wasteful number, since it uses less digits than its factorization.

155030453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115466.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 155030453 is about 12451.1225598337. The cubic root of 155030453 is about 537.2037125315.

The spelling of 155030453 in words is "one hundred fifty-five million, thirty thousand, four hundred fifty-three".