154055220 has 48 divisors (see below), whose sum is σ = 470570688. Its totient is φ = 37346560.

The previous prime is 154055203. The next prime is 154055233. The reversal of 154055220 is 22550451.

It is a happy number.

154055220 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

154055220 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116049 + ... + 117368.

It is an arithmetic number, because the mean of its divisors is an integer number (9803556).

Almost surely, 2^154055220 is an apocalyptic number.

154055220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154055220 is an abundant number, since it is smaller than the sum of its proper divisors (316515468).

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

154055220 is a wasteful number, since it uses less digits than its factorization.

154055220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233440 (or 233438 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 154055220 is about 12411.8983237859. The cubic root of 154055220 is about 536.0748994983.

The spelling of 154055220 in words is "one hundred fifty-four million, fifty-five thousand, two hundred twenty".