181098053 has 4 divisors (see below), whose sum is σ = 182209248. Its totient is φ = 179986860.

The previous prime is 181098031. The next prime is 181098061. The reversal of 181098053 is 350890181.

181098053 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 350890181 = 131 ⋅2678551.

It is a cyclic number.

It is not a de Polignac number, because 181098053 - 2¹⁴ = 181081669 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 (181098023) 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, 555353 + ... + 555678.

It is an arithmetic number, because the mean of its divisors is an integer number (45552312).

Almost surely, 2^181098053 is an apocalyptic number.

It is an amenable number.

181098053 is a deficient number, since it is larger than the sum of its proper divisors (1111195).

181098053 is a wasteful number, since it uses less digits than its factorization.

181098053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111194.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 181098053 is about 13457.2676647230. The cubic root of 181098053 is about 565.7674099585.

It can be divided in two parts, 18109 and 8053, that added together give a palindrome (26162).

The spelling of 181098053 in words is "one hundred eighty-one million, ninety-eight thousand, fifty-three".