53011663 has 4 divisors (see below), whose sum is σ = 53026848. Its totient is φ = 52996480.

The previous prime is 53011657. The next prime is 53011669. The reversal of 53011663 is 36611035.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (53011657) and next prime (53011669).

It is a cyclic number.

It is not a de Polignac number, because 53011663 - 2¹³ = 53003471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53011669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 570 + ... + 10312.

It is an arithmetic number, because the mean of its divisors is an integer number (13256712).

Almost surely, 2^53011663 is an apocalyptic number.

53011663 is a deficient number, since it is larger than the sum of its proper divisors (15185).

53011663 is an equidigital number, since it uses as much as digits as its factorization.

53011663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15184.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 53011663 is about 7280.9108633467. The cubic root of 53011663 is about 375.6561265841.

Adding to 53011663 its reverse (36611035), we get a palindrome (89622698).

The spelling of 53011663 in words is "fifty-three million, eleven thousand, six hundred sixty-three".