53445545 has 16 divisors (see below), whose sum is σ = 65197440. Its totient is φ = 42054144.

The previous prime is 53445541. The next prime is 53445547. The reversal of 53445545 is 54554435.

It is a cyclic number.

It is not a de Polignac number, because 53445545 - 2² = 53445541 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53445541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127346 + ... + 127764.

It is an arithmetic number, because the mean of its divisors is an integer number (4074840).

Almost surely, 2^53445545 is an apocalyptic number.

It is an amenable number.

53445545 is a deficient number, since it is larger than the sum of its proper divisors (11751895).

53445545 is a wasteful number, since it uses less digits than its factorization.

53445545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784.

The product of its digits is 120000, while the sum is 35.

The square root of 53445545 is about 7310.6460042872. The cubic root of 53445545 is about 376.6782146806.

The spelling of 53445545 in words is "fifty-three million, four hundred forty-five thousand, five hundred forty-five".