53123405 has 4 divisors (see below), whose sum is σ = 63748092. Its totient is φ = 42498720.

The previous prime is 53123401. The next prime is 53123431. The reversal of 53123405 is 50432135.

53123405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 41705764 + 11417641 = 6458^2 + 3379^2 .

It is not a de Polignac number, because 53123405 - 2² = 53123401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53123401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5312336 + ... + 5312345.

It is an arithmetic number, because the mean of its divisors is an integer number (15937023).

Almost surely, 2^53123405 is an apocalyptic number.

It is an amenable number.

53123405 is a deficient number, since it is larger than the sum of its proper divisors (10624687).

53123405 is a wasteful number, since it uses less digits than its factorization.

53123405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10624686.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 53123405 is about 7288.5804516380. The cubic root of 53123405 is about 375.9198868287.

The spelling of 53123405 in words is "fifty-three million, one hundred twenty-three thousand, four hundred five".