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52752881 = 894571297
BaseRepresentation
bin1100100100111…
…1000111110001
310200021010100102
43021033013301
5102001043011
65122402145
71210251326
oct311170761
9120233312
1052752881
1127861025
1215800355
13ac1042c
147012b4d
15497073b
hex324f1f1

52752881 has 8 divisors (see below), whose sum is σ = 53503560. Its totient is φ = 52005888.

The previous prime is 52752877. The next prime is 52752893. The reversal of 52752881 is 18825725.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 26946481 + 25806400 = 5191^2 + 5080^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52752881 - 22 = 52752877 is a prime.

It is a super-2 number, since 2×527528812 = 5565732907600322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52752841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40025 + ... + 41321.

It is an arithmetic number, because the mean of its divisors is an integer number (6687945).

Almost surely, 252752881 is an apocalyptic number.

It is an amenable number.

52752881 is a deficient number, since it is larger than the sum of its proper divisors (750679).

52752881 is a wasteful number, since it uses less digits than its factorization.

52752881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843.

The product of its digits is 44800, while the sum is 38.

The square root of 52752881 is about 7263.1178566784. The cubic root of 52752881 is about 375.0438609438.

The spelling of 52752881 in words is "fifty-two million, seven hundred fifty-two thousand, eight hundred eighty-one".

Divisors: 1 89 457 1297 40673 115433 592729 52752881