154435554 has 72 divisors (see below), whose sum is σ = 419213340. Its totient is φ = 40727232.

The previous prime is 154435529. The next prime is 154435571. The reversal of 154435554 is 455534451.

It can be written as a sum of positive squares in 2 ways, for example, as 151954929 + 2480625 = 12327^2 + 1575^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4732 + ... + 18200.

Almost surely, 2^154435554 is an apocalyptic number.

154435554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 154435554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209606670).

154435554 is an abundant number, since it is smaller than the sum of its proper divisors (264777786).

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

154435554 is a wasteful number, since it uses less digits than its factorization.

154435554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13504 (or 13494 counting only the distinct ones).

The product of its digits is 120000, while the sum is 36.

The square root of 154435554 is about 12427.2102259518. The cubic root of 154435554 is about 536.5156937227.

The spelling of 154435554 in words is "one hundred fifty-four million, four hundred thirty-five thousand, five hundred fifty-four".