155240241 has 32 divisors (see below), whose sum is σ = 235683840. Its totient is φ = 90103104.

The previous prime is 155240213. The next prime is 155240251. The reversal of 155240241 is 142042551.

It is not a de Polignac number, because 155240241 - 2⁶ = 155240177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (155240251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283530 + ... + 284076.

It is an arithmetic number, because the mean of its divisors is an integer number (7365120).

Almost surely, 2^155240241 is an apocalyptic number.

It is an amenable number.

155240241 is a deficient number, since it is larger than the sum of its proper divisors (80443599).

155240241 is a wasteful number, since it uses less digits than its factorization.

155240241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 155240241 is about 12459.5441730426. The cubic root of 155240241 is about 537.4459189143.

Adding to 155240241 its reverse (142042551), we get a palindrome (297282792).

The spelling of 155240241 in words is "one hundred fifty-five million, two hundred forty thousand, two hundred forty-one".