53663811 has 8 divisors (see below), whose sum is σ = 71673600. Its totient is φ = 35714952.

The previous prime is 53663803. The next prime is 53663837. The reversal of 53663811 is 11836635.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53663811 - 2³ = 53663803 is a prime.

It is a super-2 number, since 2×53663811² = 5759609222087442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53663881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13135 + ... + 16728.

It is an arithmetic number, because the mean of its divisors is an integer number (8959200).

Almost surely, 2^53663811 is an apocalyptic number.

53663811 is a deficient number, since it is larger than the sum of its proper divisors (18009789).

53663811 is a wasteful number, since it uses less digits than its factorization.

53663811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30465.

The product of its digits is 12960, while the sum is 33.

The square root of 53663811 is about 7325.5587500204. The cubic root of 53663811 is about 377.1902896651.

The spelling of 53663811 in words is "fifty-three million, six hundred sixty-three thousand, eight hundred eleven".