155441601 has 36 divisors (see below), whose sum is σ = 260727168. Its totient is φ = 87417792.

The previous prime is 155441599. The next prime is 155441639. The reversal of 155441601 is 106144551.

155441601 is a `hidden beast` number, since 1 + 5 + 54 + 4 + 1 + 601 = 666.

It is not a de Polignac number, because 155441601 - 2¹ = 155441599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155441681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 335496 + ... + 335958.

Almost surely, 2^155441601 is an apocalyptic number.

It is an amenable number.

155441601 is a deficient number, since it is larger than the sum of its proper divisors (105285567).

155441601 is an equidigital number, since it uses as much as digits as its factorization.

155441601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 155441601 is about 12467.6221068815. The cubic root of 155441601 is about 537.6781897760.

The spelling of 155441601 in words is "one hundred fifty-five million, four hundred forty-one thousand, six hundred one".