52401405 has 32 divisors (see below), whose sum is σ = 99129600. Its totient is φ = 23127552.

The previous prime is 52401367. The next prime is 52401407. The reversal of 52401405 is 50410425.

It is not a de Polignac number, because 52401405 - 2⁶ = 52401341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52401407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5560 + ... + 11649.

It is an arithmetic number, because the mean of its divisors is an integer number (3097800).

Almost surely, 2^52401405 is an apocalyptic number.

It is an amenable number.

52401405 is a deficient number, since it is larger than the sum of its proper divisors (46728195).

52401405 is a wasteful number, since it uses less digits than its factorization.

52401405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17253.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 52401405 is about 7238.8814743716. The cubic root of 52401405 is about 374.2090707665.

The spelling of 52401405 in words is "fifty-two million, four hundred one thousand, four hundred five".