53453986 has 4 divisors (see below), whose sum is σ = 80180982. Its totient is φ = 26726992.

The previous prime is 53453971. The next prime is 53453999. The reversal of 53453986 is 68935435.

53453986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68935435 = 5 ⋅13787087.

It can be written as a sum of positive squares in only one way, i.e., 28143025 + 25310961 = 5305^2 + 5031^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13363495 + ... + 13363498.

Almost surely, 2^53453986 is an apocalyptic number.

53453986 is a deficient number, since it is larger than the sum of its proper divisors (26726996).

53453986 is a wasteful number, since it uses less digits than its factorization.

53453986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26726995.

The product of its digits is 388800, while the sum is 43.

The square root of 53453986 is about 7311.2232902572. The cubic root of 53453986 is about 376.6980440442.

The spelling of 53453986 in words is "fifty-three million, four hundred fifty-three thousand, nine hundred eighty-six".