155146613 has 4 divisors (see below), whose sum is σ = 155177388. Its totient is φ = 155115840.

The previous prime is 155146603. The next prime is 155146619. The reversal of 155146613 is 316641551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21003889 + 134142724 = 4583^2 + 11582^2 .

It is a cyclic number.

It is not a de Polignac number, because 155146613 - 2¹⁰ = 155145589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155146613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155146619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5858 + ... + 18563.

It is an arithmetic number, because the mean of its divisors is an integer number (38794347).

Almost surely, 2^155146613 is an apocalyptic number.

It is an amenable number.

155146613 is a deficient number, since it is larger than the sum of its proper divisors (30775).

155146613 is an equidigital number, since it uses as much as digits as its factorization.

155146613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30774.

The product of its digits is 10800, while the sum is 32.

The square root of 155146613 is about 12455.7863260414. The cubic root of 155146613 is about 537.3378496279.

The spelling of 155146613 in words is "one hundred fifty-five million, one hundred forty-six thousand, six hundred thirteen".