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52054405 = 5132334819
BaseRepresentation
bin1100011010010…
…0100110000101
310121221122012221
43012210212011
5101311220110
65055412341
71201312054
oct306444605
9117848187
1052054405
1127424277
12155240b1
13aa27530
146cb039b
1548837da
hex31a4985

52054405 has 16 divisors (see below), whose sum is σ = 70197120. Its totient is φ = 36767808.

The previous prime is 52054403. The next prime is 52054447. The reversal of 52054405 is 50445025.

It is a cyclic number.

It is not a de Polignac number, because 52054405 - 21 = 52054403 is a prime.

It is a super-2 number, since 2×520544052 = 5419322159808050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52054405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52054403) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15915 + ... + 18904.

It is an arithmetic number, because the mean of its divisors is an integer number (4387320).

Almost surely, 252054405 is an apocalyptic number.

It is an amenable number.

52054405 is a deficient number, since it is larger than the sum of its proper divisors (18142715).

52054405 is a wasteful number, since it uses less digits than its factorization.

52054405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34860.

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 52054405 is about 7214.8738727714. The cubic root of 52054405 is about 373.3812416374.

It can be divided in two parts, 5 and 2054405, that multiplied together give a square (10272025 = 32052).

The spelling of 52054405 in words is "fifty-two million, fifty-four thousand, four hundred five".

Divisors: 1 5 13 23 65 115 299 1495 34819 174095 452647 800837 2263235 4004185 10410881 52054405