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52626769 = 1321372273
BaseRepresentation
bin1100100011000…
…0010101010001
310200000201100121
43020300111101
5101433024034
65115550241
71206214546
oct310602521
9120021317
1052626769
11277852a8
121575b381
13ab97c00
146dbcbcd
1549481b4
hex3230551

52626769 has 12 divisors (see below), whose sum is σ = 57427596. Its totient is φ = 48202752.

The previous prime is 52626767. The next prime is 52626799. The reversal of 52626769 is 96762625.

It can be written as a sum of positive squares in 6 ways, for example, as 786769 + 51840000 = 887^2 + 7200^2 .

It is not a de Polignac number, because 52626769 - 21 = 52626767 is a prime.

It is a super-2 number, since 2×526267692 = 5539153630758722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52626767) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22017 + ... + 24289.

It is an arithmetic number, because the mean of its divisors is an integer number (4785633).

Almost surely, 252626769 is an apocalyptic number.

It is an amenable number.

52626769 is a deficient number, since it is larger than the sum of its proper divisors (4800827).

52626769 is a wasteful number, since it uses less digits than its factorization.

52626769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436 (or 2423 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 52626769 is about 7254.4309907807. The cubic root of 52626769 is about 374.7447602391.

The spelling of 52626769 in words is "fifty-two million, six hundred twenty-six thousand, seven hundred sixty-nine".

Divisors: 1 13 137 169 1781 2273 23153 29549 311401 384137 4048213 52626769