155643053 has 4 divisors (see below), whose sum is σ = 159849660. Its totient is φ = 151436448.

The previous prime is 155643043. The next prime is 155643071. The reversal of 155643053 is 350346551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350346551 = 67 ⋅5229053.

It can be written as a sum of positive squares in 2 ways, for example, as 80335369 + 75307684 = 8963^2 + 8678^2 .

It is a cyclic number.

It is not a de Polignac number, because 155643053 - 2⁶ = 155642989 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 (155643013) 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, 2103248 + ... + 2103321.

It is an arithmetic number, because the mean of its divisors is an integer number (39962415).

Almost surely, 2^155643053 is an apocalyptic number.

It is an amenable number.

155643053 is a deficient number, since it is larger than the sum of its proper divisors (4206607).

155643053 is an equidigital number, since it uses as much as digits as its factorization.

155643053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4206606.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 155643053 is about 12475.6984974790. The cubic root of 155643053 is about 537.9103661197.

The spelling of 155643053 in words is "one hundred fifty-five million, six hundred forty-three thousand, fifty-three".