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52411540 = 2252620577
BaseRepresentation
bin1100011111101…
…1110010010100
310122121210010011
43013323302110
5101404132130
65111210004
71204330216
oct307736224
9118553104
1052411540
1127648625
1215676904
13ab20c5c
146d645b6
15490452a
hex31fbc94

52411540 has 12 divisors (see below), whose sum is σ = 110064276. Its totient is φ = 20964608.

The previous prime is 52411511. The next prime is 52411559. The reversal of 52411540 is 4511425.

It can be written as a sum of positive squares in 2 ways, for example, as 28772496 + 23639044 = 5364^2 + 4862^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1310269 + ... + 1310308.

It is an arithmetic number, because the mean of its divisors is an integer number (9172023).

Almost surely, 252411540 is an apocalyptic number.

It is an amenable number.

52411540 is an abundant number, since it is smaller than the sum of its proper divisors (57652736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52411540 is a wasteful number, since it uses less digits than its factorization.

52411540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620586 (or 2620584 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 52411540 is about 7239.5814796161. The cubic root of 52411540 is about 374.2331945754.

Adding to 52411540 its reverse (4511425), we get a palindrome (56922965).

The spelling of 52411540 in words is "fifty-two million, four hundred eleven thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 2620577 5241154 10482308 13102885 26205770 52411540