53750021587 has 2 divisors, whose sum is σ = 53750021588. Its totient is φ = 53750021586.

The previous prime is 53750021561. The next prime is 53750021593. The reversal of 53750021587 is 78512005735.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53750021587 - 2¹⁹ = 53749497299 is a prime.

It is not a weakly prime, because it can be changed into another prime (53750021597) 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, 26875010793 + 26875010794.

It is an arithmetic number, because the mean of its divisors is an integer number (26875010794).

Almost surely, 2^53750021587 is an apocalyptic number.

53750021587 is a deficient number, since it is larger than the sum of its proper divisors (1).

53750021587 is an equidigital number, since it uses as much as digits as its factorization.

53750021587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294000, while the sum is 43.

The spelling of 53750021587 in words is "fifty-three billion, seven hundred fifty million, twenty-one thousand, five hundred eighty-seven".