53146987 has 2 divisors, whose sum is σ = 53146988. Its totient is φ = 53146986.

The previous prime is 53146963. The next prime is 53146999. The reversal of 53146987 is 78964135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53146987 - 2¹⁹ = 52622699 is a prime.

It is not a weakly prime, because it can be changed into another prime (53146087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26573493 + 26573494.

It is an arithmetic number, because the mean of its divisors is an integer number (26573494).

Almost surely, 2^53146987 is an apocalyptic number.

53146987 is a deficient number, since it is larger than the sum of its proper divisors (1).

53146987 is an equidigital number, since it uses as much as digits as its factorization.

53146987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 53146987 is about 7290.1980082848. The cubic root of 53146987 is about 375.9755034403.

The spelling of 53146987 in words is "fifty-three million, one hundred forty-six thousand, nine hundred eighty-seven".