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52540719 = 37111911971
BaseRepresentation
bin1100100001101…
…1010100101111
310122212100022120
43020123110233
5101422300334
65114044023
71205405640
oct310332457
9118770276
1052540719
1127726690
1215719613
13ab679aa
146d996c7
15492c949
hex321b52f

52540719 has 32 divisors (see below), whose sum is σ = 91944960. Its totient is φ = 25855200.

The previous prime is 52540699. The next prime is 52540723. The reversal of 52540719 is 91704525.

It is not a de Polignac number, because 52540719 - 25 = 52540687 is a prime.

It is a super-2 number, since 2×525407192 = 5521054306073922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 52540719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52540759) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1597 + ... + 10374.

It is an arithmetic number, because the mean of its divisors is an integer number (2873280).

Almost surely, 252540719 is an apocalyptic number.

52540719 is a deficient number, since it is larger than the sum of its proper divisors (39404241).

52540719 is a wasteful number, since it uses less digits than its factorization.

52540719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12011.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 52540719 is about 7248.4977064217. The cubic root of 52540719 is about 374.5404005011.

The spelling of 52540719 in words is "fifty-two million, five hundred forty thousand, seven hundred nineteen".

Divisors: 1 3 7 11 19 21 33 57 77 133 209 231 399 627 1463 4389 11971 35913 83797 131681 227449 251391 395043 682347 921767 1592143 2501939 2765301 4776429 7505817 17513573 52540719