52640587 has 2 divisors, whose sum is σ = 52640588. Its totient is φ = 52640586.

The previous prime is 52640543. The next prime is 52640641. The reversal of 52640587 is 78504625.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52640587 - 2¹¹ = 52638539 is a prime.

It is not a weakly prime, because it can be changed into another prime (52641587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26320293 + 26320294.

It is an arithmetic number, because the mean of its divisors is an integer number (26320294).

Almost surely, 2^52640587 is an apocalyptic number.

52640587 is a deficient number, since it is larger than the sum of its proper divisors (1).

52640587 is an equidigital number, since it uses as much as digits as its factorization.

52640587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 52640587 is about 7255.3833117210. The cubic root of 52640587 is about 374.7775557793. Note that the first 3 decimals are identical.

It can be divided in two parts, 526405 and 87, that multiplied together give a triangular number (45797235 = T₉₅₇₀).

The spelling of 52640587 in words is "fifty-two million, six hundred forty thousand, five hundred eighty-seven".