253633487 has 2 divisors, whose sum is σ = 253633488. Its totient is φ = 253633486.

The previous prime is 253633477. The next prime is 253633493. The reversal of 253633487 is 784336352.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253633487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253633417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126816743 + 126816744.

It is an arithmetic number, because the mean of its divisors is an integer number (126816744).

Almost surely, 2^253633487 is an apocalyptic number.

253633487 is a deficient number, since it is larger than the sum of its proper divisors (1).

253633487 is an equidigital number, since it uses as much as digits as its factorization.

253633487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 41.

The square root of 253633487 is about 15925.8747640436. The cubic root of 253633487 is about 632.9977954563.

The spelling of 253633487 in words is "two hundred fifty-three million, six hundred thirty-three thousand, four hundred eighty-seven".