53551145 has 4 divisors (see below), whose sum is σ = 64261380. Its totient is φ = 42840912.

The previous prime is 53551123. The next prime is 53551151. The reversal of 53551145 is 54115535.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32501401 + 21049744 = 5701^2 + 4588^2 .

It is a cyclic number.

It is not a de Polignac number, because 53551145 - 2¹⁰ = 53550121 is a prime.

It is a super-2 number, since 2×53551145² = 5735450261622050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5355110 + ... + 5355119.

It is an arithmetic number, because the mean of its divisors is an integer number (16065345).

Almost surely, 2^53551145 is an apocalyptic number.

It is an amenable number.

53551145 is a deficient number, since it is larger than the sum of its proper divisors (10710235).

53551145 is a wasteful number, since it uses less digits than its factorization.

53551145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10710234.

The product of its digits is 7500, while the sum is 29.

The square root of 53551145 is about 7317.8647842113. The cubic root of 53551145 is about 376.9261371242.

The spelling of 53551145 in words is "fifty-three million, five hundred fifty-one thousand, one hundred forty-five".