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52708969 = 137384737
BaseRepresentation
bin1100100100010…
…0011001101001
310200011220010001
43021010121221
5101443141334
65121423001
71210006315
oct311043151
9120156101
1052708969
1127831035
121579aa61
13abc6451
147000b45
154962714
hex3244669

52708969 has 4 divisors (see below), whose sum is σ = 53093844. Its totient is φ = 52324096.

The previous prime is 52708961. The next prime is 52708973. The reversal of 52708969 is 96980725.

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 31225744 + 21483225 = 5588^2 + 4635^2 .

It is a cyclic number.

It is not a de Polignac number, because 52708969 - 23 = 52708961 is a prime.

It is a super-2 number, since 2×527089692 = 5556470826085922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52708961) 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 3 ways as a sum of consecutive naturals, for example, 192232 + ... + 192505.

It is an arithmetic number, because the mean of its divisors is an integer number (13273461).

Almost surely, 252708969 is an apocalyptic number.

It is an amenable number.

52708969 is a deficient number, since it is larger than the sum of its proper divisors (384875).

52708969 is a wasteful number, since it uses less digits than its factorization.

52708969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384874.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 52708969 is about 7260.0942831343. The cubic root of 52708969 is about 374.9397686967.

The spelling of 52708969 in words is "fifty-two million, seven hundred eight thousand, nine hundred sixty-nine".

Divisors: 1 137 384737 52708969