52171405 has 32 divisors (see below), whose sum is σ = 74245248. Its totient is φ = 34694400.

The previous prime is 52171387. The next prime is 52171411. The reversal of 52171405 is 50417125.

It is not a de Polignac number, because 52171405 - 2⁷ = 52171277 is a prime.

It is a super-4 number, since 4×52171405⁴ (a number of 32 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52171405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93387 + ... + 93943.

It is an arithmetic number, because the mean of its divisors is an integer number (2320164).

Almost surely, 2^52171405 is an apocalyptic number.

52171405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52171405 is a deficient number, since it is larger than the sum of its proper divisors (22073843).

52171405 is a wasteful number, since it uses less digits than its factorization.

52171405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 52171405 is about 7222.9775716113. The cubic root of 52171405 is about 373.6607755605.

It can be divided in two parts, 5 and 2171405, that multiplied together give a square (10857025 = 3295²).

The spelling of 52171405 in words is "fifty-two million, one hundred seventy-one thousand, four hundred five".