53145432545 has 4 divisors (see below), whose sum is σ = 63774519060. Its totient is φ = 42516346032.

The previous prime is 53145432523. The next prime is 53145432553. The reversal of 53145432545 is 54523454135.

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 32408280529 + 20737152016 = 180023^2 + 144004^2 .

It is a cyclic number.

It is not a de Polignac number, because 53145432545 - 2⁶ = 53145432481 is a prime.

It is a Curzon number.

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, 5314543250 + ... + 5314543259.

It is an arithmetic number, because the mean of its divisors is an integer number (15943629765).

Almost surely, 2^53145432545 is an apocalyptic number.

It is an amenable number.

53145432545 is a deficient number, since it is larger than the sum of its proper divisors (10629086515).

53145432545 is a wasteful number, since it uses less digits than its factorization.

53145432545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10629086514.

The product of its digits is 720000, while the sum is 41.

The spelling of 53145432545 in words is "fifty-three billion, one hundred forty-five million, four hundred thirty-two thousand, five hundred forty-five".