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55261301 = 274120161
BaseRepresentation
bin1101001011001…
…1100001110101
310211222120020212
43102303201311
5103121330201
65252235205
71240466444
oct322634165
9124876225
1055261301
11292146a7
121660bb05
13b5ab0c4
1474a6d5b
154cb8abb
hex34b3875

55261301 has 4 divisors (see below), whose sum is σ = 55284204. Its totient is φ = 55238400.

The previous prime is 55261259. The next prime is 55261307. The reversal of 55261301 is 10316255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10316255 = 52063251.

It can be written as a sum of positive squares in 2 ways, for example, as 26112100 + 29149201 = 5110^2 + 5399^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-55261301 is a prime.

It is a super-2 number, since 2×552613012 = 6107622776425202, 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 (55261307) 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, 7340 + ... + 12821.

It is an arithmetic number, because the mean of its divisors is an integer number (13821051).

Almost surely, 255261301 is an apocalyptic number.

It is an amenable number.

55261301 is a deficient number, since it is larger than the sum of its proper divisors (22903).

55261301 is a wasteful number, since it uses less digits than its factorization.

55261301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22902.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 55261301 is about 7433.7945223150. The cubic root of 55261301 is about 380.8965465196.

Adding to 55261301 its reverse (10316255), we get a palindrome (65577556).

The spelling of 55261301 in words is "fifty-five million, two hundred sixty-one thousand, three hundred one".

Divisors: 1 2741 20161 55261301