53443145 has 32 divisors (see below), whose sum is σ = 77096448. Its totient is φ = 34771968.

The previous prime is 53443129. The next prime is 53443147. The reversal of 53443145 is 54134435.

53443145 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 53443145 - 2⁴ = 53443129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53443147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158417 + ... + 158753.

It is an arithmetic number, because the mean of its divisors is an integer number (2409264).

Almost surely, 2^53443145 is an apocalyptic number.

It is an amenable number.

53443145 is a deficient number, since it is larger than the sum of its proper divisors (23653303).

53443145 is a wasteful number, since it uses less digits than its factorization.

53443145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its digits is 14400, while the sum is 29.

The square root of 53443145 is about 7310.4818582635. The cubic root of 53443145 is about 376.6725762858.

The spelling of 53443145 in words is "fifty-three million, four hundred forty-three thousand, one hundred forty-five".