253509091 has 8 divisors (see below), whose sum is σ = 279294768. Its totient is φ = 228180000.

The previous prime is 253509079. The next prime is 253509101. The reversal of 253509091 is 190905352.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253509091 - 2¹⁵ = 253476323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253509031) 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 7 ways as a sum of consecutive naturals, for example, 112980 + ... + 115201.

It is an arithmetic number, because the mean of its divisors is an integer number (34911846).

Almost surely, 2^253509091 is an apocalyptic number.

253509091 is a deficient number, since it is larger than the sum of its proper divisors (25785677).

253509091 is a wasteful number, since it uses less digits than its factorization.

253509091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228293.

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 253509091 is about 15921.9688167010. The cubic root of 253509091 is about 632.8942927322.

The spelling of 253509091 in words is "two hundred fifty-three million, five hundred nine thousand, ninety-one".