53401563 has 6 divisors (see below), whose sum is σ = 77135604. Its totient is φ = 35601036.

The previous prime is 53401559. The next prime is 53401567. The reversal of 53401563 is 36510435.

It is an interprime number because it is at equal distance from previous prime (53401559) and next prime (53401567).

It is not a de Polignac number, because 53401563 - 2² = 53401559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53401567) 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, 2966745 + ... + 2966762.

It is an arithmetic number, because the mean of its divisors is an integer number (12855934).

Almost surely, 2^53401563 is an apocalyptic number.

53401563 is a deficient number, since it is larger than the sum of its proper divisors (23734041).

53401563 is a wasteful number, since it uses less digits than its factorization.

53401563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5933513 (or 5933510 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 53401563 is about 7307.6373062707. The cubic root of 53401563 is about 376.5748595876.

Adding to 53401563 its reverse (36510435), we get a palindrome (89911998).

It can be divided in two parts, 5340 and 1563, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 53401563 in words is "fifty-three million, four hundred one thousand, five hundred sixty-three".