154471540 has 24 divisors (see below), whose sum is σ = 324633960. Its totient is φ = 61742208.

The previous prime is 154471531. The next prime is 154471547. The reversal of 154471540 is 45174451.

It can be written as a sum of positive squares in 4 ways, for example, as 3771364 + 150700176 = 1942^2 + 12276^2 .

It is a super-2 number, since 2×154471540² = 47722913339943200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154471547) 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, 39514 + ... + 43246.

It is an arithmetic number, because the mean of its divisors is an integer number (13526415).

Almost surely, 2^154471540 is an apocalyptic number.

154471540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154471540 is an abundant number, since it is smaller than the sum of its proper divisors (170162420).

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

154471540 is a wasteful number, since it uses less digits than its factorization.

154471540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811 (or 5809 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 154471540 is about 12428.6580128347. The cubic root of 154471540 is about 536.5573627854.

The spelling of 154471540 in words is "one hundred fifty-four million, four hundred seventy-one thousand, five hundred forty".