52509487 has 2 divisors, whose sum is σ = 52509488. Its totient is φ = 52509486.

The previous prime is 52509473. The next prime is 52509511. The reversal of 52509487 is 78490525.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52509487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52509187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26254743 + 26254744.

It is an arithmetic number, because the mean of its divisors is an integer number (26254744).

Almost surely, 2^52509487 is an apocalyptic number.

52509487 is a deficient number, since it is larger than the sum of its proper divisors (1).

52509487 is an equidigital number, since it uses as much as digits as its factorization.

52509487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 52509487 is about 7246.3430087183. The cubic root of 52509487 is about 374.4661725842.

The spelling of 52509487 in words is "fifty-two million, five hundred nine thousand, four hundred eighty-seven".