253702009 has 4 divisors (see below), whose sum is σ = 276765840. Its totient is φ = 230638180.

The previous prime is 253701997. The next prime is 253702019. The reversal of 253702009 is 900207352.

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.

It is a cyclic number.

It is not a de Polignac number, because 253702009 - 2²³ = 245313401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253702019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11531899 + ... + 11531920.

It is an arithmetic number, because the mean of its divisors is an integer number (69191460).

Almost surely, 2^253702009 is an apocalyptic number.

It is an amenable number.

253702009 is a deficient number, since it is larger than the sum of its proper divisors (23063831).

253702009 is a wasteful number, since it uses less digits than its factorization.

253702009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23063830.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 253702009 is about 15928.0258977690. The cubic root of 253702009 is about 633.0547941989.

The spelling of 253702009 in words is "two hundred fifty-three million, seven hundred two thousand, nine".