253148509 has 2 divisors, whose sum is σ = 253148510. Its totient is φ = 253148508.

The previous prime is 253148503. The next prime is 253148537. The reversal of 253148509 is 905841352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229431609 + 23716900 = 15147^2 + 4870^2 .

It is a cyclic number.

It is not a de Polignac number, because 253148509 - 2³ = 253148501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253148501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126574254 + 126574255.

It is an arithmetic number, because the mean of its divisors is an integer number (126574255).

Almost surely, 2^253148509 is an apocalyptic number.

It is an amenable number.

253148509 is a deficient number, since it is larger than the sum of its proper divisors (1).

253148509 is an equidigital number, since it uses as much as digits as its factorization.

253148509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 253148509 is about 15910.6413761357. The cubic root of 253148509 is about 632.5940818353.

It can be divided in two parts, 2531 and 48509, that added together give a triangular number (51040 = T₃₁₉).

The spelling of 253148509 in words is "two hundred fifty-three million, one hundred forty-eight thousand, five hundred nine".