53105501 has 4 divisors (see below), whose sum is σ = 56229372. Its totient is φ = 49981632.

The previous prime is 53105489. The next prime is 53105509. The reversal of 53105501 is 10550135.

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: 10550135 = 5 ⋅2110027.

It can be written as a sum of positive squares in 2 ways, for example, as 31024900 + 22080601 = 5570^2 + 4699^2 .

It is a de Polignac number, because none of the positive numbers 2^k-53105501 is a prime.

It is a super-2 number, since 2×53105501² = 5640388472922002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53105509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1561910 + ... + 1561943.

It is an arithmetic number, because the mean of its divisors is an integer number (14057343).

Almost surely, 2^53105501 is an apocalyptic number.

It is an amenable number.

53105501 is a deficient number, since it is larger than the sum of its proper divisors (3123871).

53105501 is a wasteful number, since it uses less digits than its factorization.

53105501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123870.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 53105501 is about 7287.3521254294. The cubic root of 53105501 is about 375.8776504176.

Adding to 53105501 its reverse (10550135), we get a palindrome (63655636).

The spelling of 53105501 in words is "fifty-three million, one hundred five thousand, five hundred one".