155465540 has 24 divisors (see below), whose sum is σ = 327427800. Its totient is φ = 62005248.

The previous prime is 155465539. The next prime is 155465551. The reversal of 155465540 is 45564551.

It can be written as a sum of positive squares in 4 ways, for example, as 861184 + 154604356 = 928^2 + 12434^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 155465540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4157 + ... + 18116.

It is an arithmetic number, because the mean of its divisors is an integer number (13642825).

Almost surely, 2^155465540 is an apocalyptic number.

155465540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155465540 is an abundant number, since it is smaller than the sum of its proper divisors (171962260).

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

155465540 is a wasteful number, since it uses less digits than its factorization.

155465540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22631 (or 22629 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

The square root of 155465540 is about 12468.5821166643. The cubic root of 155465540 is about 537.7057903183.

The spelling of 155465540 in words is "one hundred fifty-five million, four hundred sixty-five thousand, five hundred forty".