155013143 has 4 divisors (see below), whose sum is σ = 157326840. Its totient is φ = 152699448.

The previous prime is 155013109. The next prime is 155013167. The reversal of 155013143 is 341310551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341310551 = 73 ⋅4675487.

It is a cyclic number.

It is not a de Polignac number, because 155013143 - 2¹⁴ = 154996759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155013643) 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, 1156748 + ... + 1156881.

It is an arithmetic number, because the mean of its divisors is an integer number (39331710).

Almost surely, 2^155013143 is an apocalyptic number.

155013143 is a deficient number, since it is larger than the sum of its proper divisors (2313697).

155013143 is an equidigital number, since it uses as much as digits as its factorization.

155013143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313696.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 155013143 is about 12450.4274223819. The cubic root of 155013143 is about 537.1837178741.

Adding to 155013143 its reverse (341310551), we get a palindrome (496323694).

The spelling of 155013143 in words is "one hundred fifty-five million, thirteen thousand, one hundred forty-three".