155044361 has 4 divisors (see below), whose sum is σ = 160045824. Its totient is φ = 150042900.

The previous prime is 155044349. The next prime is 155044387. The reversal of 155044361 is 163440551.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-155044361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155044321) 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 3 ways as a sum of consecutive naturals, for example, 2500685 + ... + 2500746.

It is an arithmetic number, because the mean of its divisors is an integer number (40011456).

Almost surely, 2^155044361 is an apocalyptic number.

It is an amenable number.

155044361 is a deficient number, since it is larger than the sum of its proper divisors (5001463).

155044361 is an equidigital number, since it uses as much as digits as its factorization.

155044361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5001462.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 155044361 is about 12451.6810511673. The cubic root of 155044361 is about 537.2197764847.

The spelling of 155044361 in words is "one hundred fifty-five million, forty-four thousand, three hundred sixty-one".