155323541 has 4 divisors (see below), whose sum is σ = 155740332. Its totient is φ = 154906752.

The previous prime is 155323529. The next prime is 155323561. The reversal of 155323541 is 145323551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145323551 = 197 ⋅737683.

It can be written as a sum of positive squares in 2 ways, for example, as 127803025 + 27520516 = 11305^2 + 5246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155323541 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 (155323561) 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, 207836 + ... + 208581.

It is an arithmetic number, because the mean of its divisors is an integer number (38935083).

Almost surely, 2^155323541 is an apocalyptic number.

It is an amenable number.

155323541 is a deficient number, since it is larger than the sum of its proper divisors (416791).

155323541 is an equidigital number, since it uses as much as digits as its factorization.

155323541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416790.

The product of its digits is 9000, while the sum is 29.

The square root of 155323541 is about 12462.8865436543. The cubic root of 155323541 is about 537.5420306776.

The spelling of 155323541 in words is "one hundred fifty-five million, three hundred twenty-three thousand, five hundred forty-one".