253155193 has 2 divisors, whose sum is σ = 253155194. Its totient is φ = 253155192.

The previous prime is 253155173. The next prime is 253155251. The reversal of 253155193 is 391551352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244203129 + 8952064 = 15627^2 + 2992^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253155193 is a prime.

It is not a weakly prime, because it can be changed into another prime (253155173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126577596 + 126577597.

It is an arithmetic number, because the mean of its divisors is an integer number (126577597).

Almost surely, 2^253155193 is an apocalyptic number.

It is an amenable number.

253155193 is a deficient number, since it is larger than the sum of its proper divisors (1).

253155193 is an equidigital number, since it uses as much as digits as its factorization.

253155193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20250, while the sum is 34.

The square root of 253155193 is about 15910.8514228498. The cubic root of 253155193 is about 632.5996493467.

The spelling of 253155193 in words is "two hundred fifty-three million, one hundred fifty-five thousand, one hundred ninety-three".