53187643 has 2 divisors, whose sum is σ = 53187644. Its totient is φ = 53187642.

The previous prime is 53187613. The next prime is 53187649. The reversal of 53187643 is 34678135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53187643 - 2¹⁷ = 53056571 is a prime.

It is not a weakly prime, because it can be changed into another prime (53187649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26593821 + 26593822.

It is an arithmetic number, because the mean of its divisors is an integer number (26593822).

Almost surely, 2^53187643 is an apocalyptic number.

53187643 is a deficient number, since it is larger than the sum of its proper divisors (1).

53187643 is an equidigital number, since it uses as much as digits as its factorization.

53187643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 53187643 is about 7292.9858768546. The cubic root of 53187643 is about 376.0713493504.

The spelling of 53187643 in words is "fifty-three million, one hundred eighty-seven thousand, six hundred forty-three".