155241020 has 48 divisors (see below), whose sum is σ = 374371200. Its totient is φ = 53478720.

The previous prime is 155241019. The next prime is 155241067. The reversal of 155241020 is 20142551.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 155240983 and 155241001.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14390 + ... + 22749.

It is an arithmetic number, because the mean of its divisors is an integer number (7799400).

Almost surely, 2^155241020 is an apocalyptic number.

155241020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155241020 is an abundant number, since it is smaller than the sum of its proper divisors (219130180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155241020 is a wasteful number, since it uses less digits than its factorization.

155241020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37178 (or 37176 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 155241020 is about 12459.5754341791. The cubic root of 155241020 is about 537.4468178858.

Adding to 155241020 its reverse (20142551), we get a palindrome (175383571).

The spelling of 155241020 in words is "one hundred fifty-five million, two hundred forty-one thousand, twenty".