53481587 has 2 divisors, whose sum is σ = 53481588. Its totient is φ = 53481586.

The previous prime is 53481577. The next prime is 53481607. The reversal of 53481587 is 78518435.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53481587 - 2¹² = 53477491 is a prime.

It is not a weakly prime, because it can be changed into another prime (53481577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26740793 + 26740794.

It is an arithmetic number, because the mean of its divisors is an integer number (26740794).

Almost surely, 2^53481587 is an apocalyptic number.

53481587 is a deficient number, since it is larger than the sum of its proper divisors (1).

53481587 is an equidigital number, since it uses as much as digits as its factorization.

53481587 is an evil number, because the sum of its binary digits is even.

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

The square root of 53481587 is about 7313.1106240778. The cubic root of 53481587 is about 376.7628689804.

The spelling of 53481587 in words is "fifty-three million, four hundred eighty-one thousand, five hundred eighty-seven".