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52110431 = 313166487
BaseRepresentation
bin1100011011001…
…0010001011111
310122001111001222
43012302101133
5101320013211
65100523555
71201634312
oct306622137
9118044058
1052110431
112746237a
12155505bb
13aa46b99
146cc6979
1548951db
hex31b245f

52110431 has 4 divisors (see below), whose sum is σ = 52277232. Its totient is φ = 51943632.

The previous prime is 52110427. The next prime is 52110439. The reversal of 52110431 is 13401125.

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 52110431 - 22 = 52110427 is a prime.

It is a super-2 number, since 2×521104312 = 5430994038011522, 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 (52110439) 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, 82931 + ... + 83556.

It is an arithmetic number, because the mean of its divisors is an integer number (13069308).

Almost surely, 252110431 is an apocalyptic number.

52110431 is a deficient number, since it is larger than the sum of its proper divisors (166801).

52110431 is a wasteful number, since it uses less digits than its factorization.

52110431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166800.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 52110431 is about 7218.7555021624. The cubic root of 52110431 is about 373.5151499774.

Adding to 52110431 its reverse (13401125), we get a palindrome (65511556).

The spelling of 52110431 in words is "fifty-two million, one hundred ten thousand, four hundred thirty-one".

Divisors: 1 313 166487 52110431