155385641 has 4 divisors (see below), whose sum is σ = 155455872. Its totient is φ = 155315412.

The previous prime is 155385589. The next prime is 155385647. The reversal of 155385641 is 146583551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 155385641 - 2¹⁸ = 155123497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155385595 and 155385604.

It is not an unprimeable number, because it can be changed into a prime (155385647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31685 + ... + 36258.

It is an arithmetic number, because the mean of its divisors is an integer number (38863968).

Almost surely, 2^155385641 is an apocalyptic number.

It is an amenable number.

155385641 is a deficient number, since it is larger than the sum of its proper divisors (70231).

155385641 is an equidigital number, since it uses as much as digits as its factorization.

155385641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70230.

The product of its digits is 72000, while the sum is 38.

The square root of 155385641 is about 12465.3776918311. The cubic root of 155385641 is about 537.6136594685.

The spelling of 155385641 in words is "one hundred fifty-five million, three hundred eighty-five thousand, six hundred forty-one".