53502563 has 4 divisors (see below), whose sum is σ = 53801640. Its totient is φ = 53203488.

The previous prime is 53502539. The next prime is 53502571. The reversal of 53502563 is 36520535.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36520535 = 5 ⋅7304107.

It is a cyclic number.

It is not a de Polignac number, because 53502563 - 2¹⁸ = 53240419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53502583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149270 + ... + 149627.

It is an arithmetic number, because the mean of its divisors is an integer number (13450410).

Almost surely, 2^53502563 is an apocalyptic number.

53502563 is a deficient number, since it is larger than the sum of its proper divisors (299077).

53502563 is a wasteful number, since it uses less digits than its factorization.

53502563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299076.

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 53502563 is about 7314.5446201387. The cubic root of 53502563 is about 376.8121192327.

The spelling of 53502563 in words is "fifty-three million, five hundred two thousand, five hundred sixty-three".