53487787 has 2 divisors, whose sum is σ = 53487788. Its totient is φ = 53487786.

The previous prime is 53487761. The next prime is 53487799. The reversal of 53487787 is 78778435.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53487787 - 2⁷ = 53487659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53487787.

It is not a weakly prime, because it can be changed into another prime (53487587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26743893 + 26743894.

It is an arithmetic number, because the mean of its divisors is an integer number (26743894).

Almost surely, 2^53487787 is an apocalyptic number.

53487787 is a deficient number, since it is larger than the sum of its proper divisors (1).

53487787 is an equidigital number, since it uses as much as digits as its factorization.

53487787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1317120, while the sum is 49.

The square root of 53487787 is about 7313.5345080200. The cubic root of 53487787 is about 376.7774275083. Note that the first 3 decimals are identical.

The spelling of 53487787 in words is "fifty-three million, four hundred eighty-seven thousand, seven hundred eighty-seven".