53109553 has 8 divisors (see below), whose sum is σ = 63335808. Its totient is φ = 43543104.

The previous prime is 53109533. The next prime is 53109559. The reversal of 53109553 is 35590135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53109553 - 2⁵ = 53109521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53109559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164776 + ... + 165097.

It is an arithmetic number, because the mean of its divisors is an integer number (7916976).

Almost surely, 2^53109553 is an apocalyptic number.

It is an amenable number.

53109553 is a deficient number, since it is larger than the sum of its proper divisors (10226255).

53109553 is a wasteful number, since it uses less digits than its factorization.

53109553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329903.

The product of its (nonzero) digits is 10125, while the sum is 31.

The square root of 53109553 is about 7287.6301360593. The cubic root of 53109553 is about 375.8872101147.

Adding to 53109553 its reverse (35590135), we get a palindrome (88699688).

The spelling of 53109553 in words is "fifty-three million, one hundred nine thousand, five hundred fifty-three".