53405505 has 12 divisors (see below), whose sum is σ = 92569620. Its totient is φ = 28482912.

The previous prime is 53405497. The next prime is 53405507. The reversal of 53405505 is 50550435.

It can be written as a sum of positive squares in 2 ways, for example, as 16353936 + 37051569 = 4044^2 + 6087^2 .

It is not a de Polignac number, because 53405505 - 2³ = 53405497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53405507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 593350 + ... + 593439.

It is an arithmetic number, because the mean of its divisors is an integer number (7714135).

Almost surely, 2^53405505 is an apocalyptic number.

It is an amenable number.

53405505 is a deficient number, since it is larger than the sum of its proper divisors (39164115).

53405505 is a wasteful number, since it uses less digits than its factorization.

53405505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186800 (or 1186797 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 53405505 is about 7307.9070191129. The cubic root of 53405505 is about 376.5841253686.

The spelling of 53405505 in words is "fifty-three million, four hundred five thousand, five hundred five".