53487887 has 2 divisors, whose sum is σ = 53487888. Its totient is φ = 53487886.

The previous prime is 53487881. The next prime is 53487901. The reversal of 53487887 is 78878435.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53487887 - 2⁶ = 53487823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53487881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26743943 + 26743944.

It is an arithmetic number, because the mean of its divisors is an integer number (26743944).

Almost surely, 2^53487887 is an apocalyptic number.

53487887 is a deficient number, since it is larger than the sum of its proper divisors (1).

53487887 is an equidigital number, since it uses as much as digits as its factorization.

53487887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1505280, while the sum is 50.

The square root of 53487887 is about 7313.5413446565. The cubic root of 53487887 is about 376.7776623140. Note that the first 3 decimals are identical.

The spelling of 53487887 in words is "fifty-three million, four hundred eighty-seven thousand, eight hundred eighty-seven".