53688487 has 2 divisors, whose sum is σ = 53688488. Its totient is φ = 53688486.

The previous prime is 53688473. The next prime is 53688491. The reversal of 53688487 is 78488635.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53688487 - 2²³ = 45299879 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53688487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53688287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26844243 + 26844244.

It is an arithmetic number, because the mean of its divisors is an integer number (26844244).

Almost surely, 2^53688487 is an apocalyptic number.

53688487 is a deficient number, since it is larger than the sum of its proper divisors (1).

53688487 is an equidigital number, since it uses as much as digits as its factorization.

53688487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1290240, while the sum is 49.

The square root of 53688487 is about 7327.2427965777. The cubic root of 53688487 is about 377.2480947368.

The spelling of 53688487 in words is "fifty-three million, six hundred eighty-eight thousand, four hundred eighty-seven".