253700009 has 4 divisors (see below), whose sum is σ = 260556804. Its totient is φ = 246843216.

The previous prime is 253699987. The next prime is 253700011. The reversal of 253700009 is 900007352.

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 153760000 + 99940009 = 12400^2 + 9997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253700009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253700089) 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, 3428342 + ... + 3428415.

It is an arithmetic number, because the mean of its divisors is an integer number (65139201).

Almost surely, 2^253700009 is an apocalyptic number.

It is an amenable number.

253700009 is a deficient number, since it is larger than the sum of its proper divisors (6856795).

253700009 is an equidigital number, since it uses as much as digits as its factorization.

253700009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6856794.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 253700009 is about 15927.9631152260. The cubic root of 253700009 is about 633.0531306818.

The spelling of 253700009 in words is "two hundred fifty-three million, seven hundred thousand, nine".