253437673 has 2 divisors, whose sum is σ = 253437674. Its totient is φ = 253437672.

The previous prime is 253437671. The next prime is 253437689. The reversal of 253437673 is 376734352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164172969 + 89264704 = 12813^2 + 9448^2 .

It is a cyclic number.

It is not a de Polignac number, because 253437673 - 2¹ = 253437671 is a prime.

Together with 253437671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (253437671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126718836 + 126718837.

It is an arithmetic number, because the mean of its divisors is an integer number (126718837).

Almost surely, 2^253437673 is an apocalyptic number.

It is an amenable number.

253437673 is a deficient number, since it is larger than the sum of its proper divisors (1).

253437673 is an equidigital number, since it uses as much as digits as its factorization.

253437673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 40.

The square root of 253437673 is about 15919.7259084445. The cubic root of 253437673 is about 632.8348546405.

The spelling of 253437673 in words is "two hundred fifty-three million, four hundred thirty-seven thousand, six hundred seventy-three".