253519993 has 2 divisors, whose sum is σ = 253519994. Its totient is φ = 253519992.

The previous prime is 253519969. The next prime is 253520009. The reversal of 253519993 is 399915352.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 247527289 + 5992704 = 15733^2 + 2448^2 .

It is a cyclic number.

It is not a de Polignac number, because 253519993 - 2¹³ = 253511801 is a prime.

It is not a weakly prime, because it can be changed into another prime (253519493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126759996 + 126759997.

It is an arithmetic number, because the mean of its divisors is an integer number (126759997).

Almost surely, 2^253519993 is an apocalyptic number.

It is an amenable number.

253519993 is a deficient number, since it is larger than the sum of its proper divisors (1).

253519993 is an equidigital number, since it uses as much as digits as its factorization.

253519993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 328050, while the sum is 46.

The square root of 253519993 is about 15922.3111701788. The cubic root of 253519993 is about 632.9033650100.

It can be divided in two parts, 25351 and 9993, that added together give a square (35344 = 188²).

The spelling of 253519993 in words is "two hundred fifty-three million, five hundred nineteen thousand, nine hundred ninety-three".