253501397 has 4 divisors (see below), whose sum is σ = 254608620. Its totient is φ = 252394176.

The previous prime is 253501379. The next prime is 253501403. The reversal of 253501397 is 793105352.

It is a happy number.

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 247936516 + 5564881 = 15746^2 + 2359^2 .

It is a cyclic number.

It is not a de Polignac number, because 253501397 - 2⁸ = 253501141 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 (253501307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553268 + ... + 553725.

It is an arithmetic number, because the mean of its divisors is an integer number (63652155).

Almost surely, 2^253501397 is an apocalyptic number.

It is an amenable number.

253501397 is a deficient number, since it is larger than the sum of its proper divisors (1107223).

253501397 is a wasteful number, since it uses less digits than its factorization.

253501397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107222.

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 253501397 is about 15921.7271990196. The cubic root of 253501397 is about 632.8878898876.

The spelling of 253501397 in words is "two hundred fifty-three million, five hundred one thousand, three hundred ninety-seven".