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53424551 = 131407821
BaseRepresentation
bin1100101111001…
…1000110100111
310201112020201002
43023303012213
5102134041201
65145023515
71216046465
oct313630647
9121466632
1053424551
112817a724
1215a84b9b
13b0b707b
147149835
154a5476b
hex32f31a7

53424551 has 4 divisors (see below), whose sum is σ = 53832504. Its totient is φ = 53016600.

The previous prime is 53424541. The next prime is 53424577. The reversal of 53424551 is 15542435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15542435 = 53108487.

It is a cyclic number.

It is not a de Polignac number, because 53424551 - 26 = 53424487 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 (53424541) 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, 203780 + ... + 204041.

It is an arithmetic number, because the mean of its divisors is an integer number (13458126).

Almost surely, 253424551 is an apocalyptic number.

53424551 is a deficient number, since it is larger than the sum of its proper divisors (407953).

53424551 is a wasteful number, since it uses less digits than its factorization.

53424551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407952.

The product of its digits is 12000, while the sum is 29.

The square root of 53424551 is about 7309.2100120328. The cubic root of 53424551 is about 376.6288871011.

Adding to 53424551 its reverse (15542435), we get a palindrome (68966986).

The spelling of 53424551 in words is "fifty-three million, four hundred twenty-four thousand, five hundred fifty-one".

Divisors: 1 131 407821 53424551