273250409 has 2 divisors, whose sum is σ = 273250410. Its totient is φ = 273250408.

The previous prime is 273250391. The next prime is 273250421. The reversal of 273250409 is 904052372.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273174784 + 75625 = 16528^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 273250409 - 2¹² = 273246313 is a prime.

It is not a weakly prime, because it can be changed into another prime (273250009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136625204 + 136625205.

It is an arithmetic number, because the mean of its divisors is an integer number (136625205).

Almost surely, 2^273250409 is an apocalyptic number.

It is an amenable number.

273250409 is a deficient number, since it is larger than the sum of its proper divisors (1).

273250409 is an equidigital number, since it uses as much as digits as its factorization.

273250409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 273250409 is about 16530.2876260518. The cubic root of 273250409 is about 648.9136955978.

The spelling of 273250409 in words is "two hundred seventy-three million, two hundred fifty thousand, four hundred nine".