53542987 has 2 divisors, whose sum is σ = 53542988. Its totient is φ = 53542986.

The previous prime is 53542967. The next prime is 53543053. The reversal of 53542987 is 78924535.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53542987 is a prime.

It is not a weakly prime, because it can be changed into another prime (53542927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26771493 + 26771494.

It is an arithmetic number, because the mean of its divisors is an integer number (26771494).

Almost surely, 2^53542987 is an apocalyptic number.

53542987 is a deficient number, since it is larger than the sum of its proper divisors (1).

53542987 is an equidigital number, since it uses as much as digits as its factorization.

53542987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 43.

The square root of 53542987 is about 7317.3073599515. The cubic root of 53542987 is about 376.9069957994.

The spelling of 53542987 in words is "fifty-three million, five hundred forty-two thousand, nine hundred eighty-seven".