53145887 has 2 divisors, whose sum is σ = 53145888. Its totient is φ = 53145886.

The previous prime is 53145877. The next prime is 53145923. The reversal of 53145887 is 78854135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53145887 - 2⁴ = 53145871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53145877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26572943 + 26572944.

It is an arithmetic number, because the mean of its divisors is an integer number (26572944).

Almost surely, 2^53145887 is an apocalyptic number.

53145887 is a deficient number, since it is larger than the sum of its proper divisors (1).

53145887 is an equidigital number, since it uses as much as digits as its factorization.

53145887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 41.

The square root of 53145887 is about 7290.1225641274. The cubic root of 53145887 is about 375.9729095278.

The spelling of 53145887 in words is "fifty-three million, one hundred forty-five thousand, eight hundred eighty-seven".