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52515053 = 68717643
BaseRepresentation
bin1100100001010…
…1000011101101
310122211001002222
43020111003231
5101420440203
65113325125
71205241053
oct310250355
9118731088
1052515053
1127709378
12157067a5
13ab590c6
146d901d3
154925038
hex32150ed

52515053 has 4 divisors (see below), whose sum is σ = 52529568. Its totient is φ = 52500540.

The previous prime is 52515019. The next prime is 52515059. The reversal of 52515053 is 35051525.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 52515053 - 210 = 52514029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52515059) 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, 3050 + ... + 10692.

It is an arithmetic number, because the mean of its divisors is an integer number (13132392).

Almost surely, 252515053 is an apocalyptic number.

It is an amenable number.

52515053 is a deficient number, since it is larger than the sum of its proper divisors (14515).

52515053 is an equidigital number, since it uses as much as digits as its factorization.

52515053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14514.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 52515053 is about 7246.7270543329. The cubic root of 52515053 is about 374.4794032414.

Adding to 52515053 its reverse (35051525), we get a palindrome (87566578).

The spelling of 52515053 in words is "fifty-two million, five hundred fifteen thousand, fifty-three".

Divisors: 1 6871 7643 52515053