53400663 has 6 divisors (see below), whose sum is σ = 77134304. Its totient is φ = 35600436.

The previous prime is 53400661. The next prime is 53400667. The reversal of 53400663 is 36600435.

It is not a de Polignac number, because 53400663 - 2¹ = 53400661 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 (53400661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2966695 + ... + 2966712.

Almost surely, 2^53400663 is an apocalyptic number.

53400663 is a deficient number, since it is larger than the sum of its proper divisors (23733641).

53400663 is a wasteful number, since it uses less digits than its factorization.

53400663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5933413 (or 5933410 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 53400663 is about 7307.5757266004. The cubic root of 53400663 is about 376.5727440485.

The spelling of 53400663 in words is "fifty-three million, four hundred thousand, six hundred sixty-three".