253857623 has 2 divisors, whose sum is σ = 253857624. Its totient is φ = 253857622.

The previous prime is 253857599. The next prime is 253857631. The reversal of 253857623 is 326758352.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253857623 - 2¹⁴ = 253841239 is a prime.

It is equal to p_13878671 and since 253857623 and 13878671 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253857673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126928811 + 126928812.

It is an arithmetic number, because the mean of its divisors is an integer number (126928812).

Almost surely, 2^253857623 is an apocalyptic number.

253857623 is a deficient number, since it is larger than the sum of its proper divisors (1).

253857623 is an equidigital number, since it uses as much as digits as its factorization.

253857623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 41.

The square root of 253857623 is about 15932.9100606261. The cubic root of 253857623 is about 633.1842006817.

The spelling of 253857623 in words is "two hundred fifty-three million, eight hundred fifty-seven thousand, six hundred twenty-three".