154055540 has 24 divisors (see below), whose sum is σ = 334673640. Its totient is φ = 59497088.

The previous prime is 154055537. The next prime is 154055543. The reversal of 154055540 is 45550451.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (154055537) and next prime (154055543).

It can be written as a sum of positive squares in 4 ways, for example, as 12588304 + 141467236 = 3548^2 + 11894^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154055543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132227 + ... + 133386.

It is an arithmetic number, because the mean of its divisors is an integer number (13944735).

Almost surely, 2^154055540 is an apocalyptic number.

154055540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154055540 is an abundant number, since it is smaller than the sum of its proper divisors (180618100).

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

154055540 is a wasteful number, since it uses less digits than its factorization.

154055540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265651 (or 265649 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 154055540 is about 12411.9112146357. The cubic root of 154055540 is about 536.0752706723.

The spelling of 154055540 in words is "one hundred fifty-four million, fifty-five thousand, five hundred forty".