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52353431 = 134027187
BaseRepresentation
bin1100011110110…
…1100110010111
310122111211101222
43013231212113
5101400302211
65110040555
71203665624
oct307554627
9118454358
1052353431
11276089a9
121564915b
13ab00680
146d4b34b
1548e21db
hex31ed997

52353431 has 4 divisors (see below), whose sum is σ = 56380632. Its totient is φ = 48326232.

The previous prime is 52353349. The next prime is 52353443. The reversal of 52353431 is 13435325.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52353431 - 222 = 48159127 is a prime.

It is a super-2 number, since 2×523534312 = 5481763474943522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52353431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52353461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2013581 + ... + 2013606.

It is an arithmetic number, because the mean of its divisors is an integer number (14095158).

Almost surely, 252353431 is an apocalyptic number.

52353431 is a deficient number, since it is larger than the sum of its proper divisors (4027201).

52353431 is a wasteful number, since it uses less digits than its factorization.

52353431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4027200.

The product of its digits is 5400, while the sum is 26.

The square root of 52353431 is about 7235.5670821298. The cubic root of 52353431 is about 374.0948385415.

Adding to 52353431 its reverse (13435325), we get a palindrome (65788756).

The spelling of 52353431 in words is "fifty-two million, three hundred fifty-three thousand, four hundred thirty-one".

Divisors: 1 13 4027187 52353431