253437197 has 4 divisors (see below), whose sum is σ = 272932380. Its totient is φ = 233942016.

The previous prime is 253437187. The next prime is 253437203. The reversal of 253437197 is 791734352.

253437197 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.

It can be written as a sum of positive squares in 2 ways, for example, as 66814276 + 186622921 = 8174^2 + 13661^2 .

It is a cyclic number.

It is not a de Polignac number, because 253437197 - 2⁶ = 253437133 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 (253437137) 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, 9747572 + ... + 9747597.

It is an arithmetic number, because the mean of its divisors is an integer number (68233095).

Almost surely, 2^253437197 is an apocalyptic number.

It is an amenable number.

253437197 is a deficient number, since it is larger than the sum of its proper divisors (19495183).

253437197 is a wasteful number, since it uses less digits than its factorization.

253437197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19495182.

The product of its digits is 158760, while the sum is 41.

The square root of 253437197 is about 15919.7109584314. The cubic root of 253437197 is about 632.8344584489.

The spelling of 253437197 in words is "two hundred fifty-three million, four hundred thirty-seven thousand, one hundred ninety-seven".