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54152161 = 77736023
BaseRepresentation
bin1100111010010…
…0101111100001
310202220012210121
43032210233201
5102330332121
65212400241
71225200010
oct316445741
9122805717
1054152161
1128627358
1216176081
13b2b02cb
147298a77
154b4a141
hex33a4be1

54152161 has 4 divisors (see below), whose sum is σ = 61888192. Its totient is φ = 46416132.

The previous prime is 54152141. The next prime is 54152171. The reversal of 54152161 is 16125145.

It is a happy number.

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: 16125145 = 53225029.

It is not a de Polignac number, because 54152161 - 29 = 54151649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54152141) 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, 3868005 + ... + 3868018.

It is an arithmetic number, because the mean of its divisors is an integer number (15472048).

Almost surely, 254152161 is an apocalyptic number.

It is an amenable number.

54152161 is a deficient number, since it is larger than the sum of its proper divisors (7736031).

54152161 is an equidigital number, since it uses as much as digits as its factorization.

54152161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7736030.

The product of its digits is 1200, while the sum is 25.

The square root of 54152161 is about 7358.8151899609. The cubic root of 54152161 is about 378.3310021182.

The spelling of 54152161 in words is "fifty-four million, one hundred fifty-two thousand, one hundred sixty-one".

Divisors: 1 7 7736023 54152161