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55342501 = 143938459
BaseRepresentation
bin1101001100011…
…1010110100101
310212010200122021
43103013112211
5103131430001
65254103141
71241255254
oct323072645
9125120567
1055342501
112926a705
121664aab1
13b609056
1474c879b
154cd2ba1
hex34c75a5

55342501 has 4 divisors (see below), whose sum is σ = 55382400. Its totient is φ = 55302604.

The previous prime is 55342493. The next prime is 55342519. The reversal of 55342501 is 10524355.

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 an emirpimes, since its reverse is a distinct semiprime: 10524355 = 52104871.

It is a cyclic number.

It is not a de Polignac number, because 55342501 - 23 = 55342493 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 (55340501) 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, 17791 + ... + 20668.

It is an arithmetic number, because the mean of its divisors is an integer number (13845600).

Almost surely, 255342501 is an apocalyptic number.

It is an amenable number.

55342501 is a deficient number, since it is larger than the sum of its proper divisors (39899).

55342501 is a wasteful number, since it uses less digits than its factorization.

55342501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39898.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 55342501 is about 7439.2540620683. The cubic root of 55342501 is about 381.0830161504.

Adding to 55342501 its reverse (10524355), we get a palindrome (65866856).

The spelling of 55342501 in words is "fifty-five million, three hundred forty-two thousand, five hundred one".

Divisors: 1 1439 38459 55342501