53355563 has 6 divisors (see below), whose sum is σ = 55259724. Its totient is φ = 51514904.

The previous prime is 53355551. The next prime is 53355569. The reversal of 53355563 is 36555335.

It is not a de Polignac number, because 53355563 - 2⁶ = 53355499 is a prime.

It is a super-2 number, since 2×53355563² = 5693632206093938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53355569) 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, 30881 + ... + 32562.

It is an arithmetic number, because the mean of its divisors is an integer number (9209954).

Almost surely, 2^53355563 is an apocalyptic number.

53355563 is a deficient number, since it is larger than the sum of its proper divisors (1904161).

53355563 is an equidigital number, since it uses as much as digits as its factorization.

53355563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63501 (or 63472 counting only the distinct ones).

The product of its digits is 101250, while the sum is 35.

The square root of 53355563 is about 7304.4892360794. The cubic root of 53355563 is about 376.4667015813.

The spelling of 53355563 in words is "fifty-three million, three hundred fifty-five thousand, five hundred sixty-three".