53963818 has 4 divisors (see below), whose sum is σ = 80945730. Its totient is φ = 26981908.

The previous prime is 53963807. The next prime is 53963827. The reversal of 53963818 is 81836935.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81836935 = 5 ⋅16367387.

It can be written as a sum of positive squares in only one way, i.e., 32182929 + 21780889 = 5673^2 + 4667^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13490953 + ... + 13490956.

Almost surely, 2^53963818 is an apocalyptic number.

53963818 is a deficient number, since it is larger than the sum of its proper divisors (26981912).

53963818 is a wasteful number, since it uses less digits than its factorization.

53963818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26981911.

The product of its digits is 155520, while the sum is 43.

The square root of 53963818 is about 7346.0069425505. The cubic root of 53963818 is about 377.8918767300.

The spelling of 53963818 in words is "fifty-three million, nine hundred sixty-three thousand, eight hundred eighteen".