154754555221 has 24 divisors (see below), whose sum is σ = 181173478560. Its totient is φ = 131799376800.

The previous prime is 154754555209. The next prime is 154754555231. The reversal of 154754555221 is 122555457451.

It is not a de Polignac number, because 154754555221 - 2¹⁹ = 154754030933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154754555201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6387751 + ... + 6411931.

It is an arithmetic number, because the mean of its divisors is an integer number (7548894940).

Almost surely, 2^154754555221 is an apocalyptic number.

It is an amenable number.

154754555221 is a deficient number, since it is larger than the sum of its proper divisors (26418923339).

154754555221 is a wasteful number, since it uses less digits than its factorization.

154754555221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25025 (or 25018 counting only the distinct ones).

The product of its digits is 1400000, while the sum is 46.

The spelling of 154754555221 in words is "one hundred fifty-four billion, seven hundred fifty-four million, five hundred fifty-five thousand, two hundred twenty-one".