168747253 has 8 divisors (see below), whose sum is σ = 178976088. Its totient is φ = 158552064.

The previous prime is 168747247. The next prime is 168747277. The reversal of 168747253 is 352747861.

168747253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 39652209 + 129095044 = 6297^2 + 11362^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 168747253 - 2¹³ = 168739061 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 (168747233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2325 + ... + 18517.

It is an arithmetic number, because the mean of its divisors is an integer number (22372011).

Almost surely, 2^168747253 is an apocalyptic number.

It is an amenable number.

168747253 is a deficient number, since it is larger than the sum of its proper divisors (10228835).

168747253 is a wasteful number, since it uses less digits than its factorization.

168747253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16823.

The product of its digits is 282240, while the sum is 43.

The square root of 168747253 is about 12990.2753242570. The cubic root of 168747253 is about 552.6017262510.

The spelling of 168747253 in words is "one hundred sixty-eight million, seven hundred forty-seven thousand, two hundred fifty-three".