153540243 has 48 divisors (see below), whose sum is σ = 243116640. Its totient is φ = 93007872.

The previous prime is 153540223. The next prime is 153540307. The reversal of 153540243 is 342045351.

153540243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 153540243 - 2⁸ = 153539987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (153540223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 658855 + ... + 659087.

It is an arithmetic number, because the mean of its divisors is an integer number (5064930).

Almost surely, 2^153540243 is an apocalyptic number.

153540243 is a deficient number, since it is larger than the sum of its proper divisors (89576397).

153540243 is a wasteful number, since it uses less digits than its factorization.

153540243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 385 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 153540243 is about 12391.1356622386. The cubic root of 153540243 is about 535.4769008755.

Adding to 153540243 its reverse (342045351), we get a palindrome (495585594).

The spelling of 153540243 in words is "one hundred fifty-three million, five hundred forty thousand, two hundred forty-three".