155513243 has 8 divisors (see below), whose sum is σ = 157304400. Its totient is φ = 153728928.

The previous prime is 155513219. The next prime is 155513269. The reversal of 155513243 is 342315551.

155513243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155513243 - 2¹⁰ = 155512219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155513273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54080 + ... + 56882.

It is an arithmetic number, because the mean of its divisors is an integer number (19663050).

Almost surely, 2^155513243 is an apocalyptic number.

155513243 is a deficient number, since it is larger than the sum of its proper divisors (1791157).

155513243 is a wasteful number, since it uses less digits than its factorization.

155513243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421.

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

The square root of 155513243 is about 12470.4948979581. The cubic root of 155513243 is about 537.7607811891.

Adding to 155513243 its reverse (342315551), we get a palindrome (497828794).

The spelling of 155513243 in words is "one hundred fifty-five million, five hundred thirteen thousand, two hundred forty-three".