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55262731 is a prime number
BaseRepresentation
bin1101001011001…
…1111000001011
310211222122012211
43102303320023
5103121401411
65252245551
71240503556
oct322637013
9124878184
1055262731
1129215787
12166108b7
13b5ab954
1474a769d
154cb9221
hex34b3e0b

55262731 has 2 divisors, whose sum is σ = 55262732. Its totient is φ = 55262730.

The previous prime is 55262723. The next prime is 55262747. The reversal of 55262731 is 13726255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55262731 - 23 = 55262723 is a prime.

It is a super-3 number, since 3×552627313 (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 55262693 and 55262702.

It is not a weakly prime, because it can be changed into another prime (55262771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27631365 + 27631366.

It is an arithmetic number, because the mean of its divisors is an integer number (27631366).

Almost surely, 255262731 is an apocalyptic number.

55262731 is a deficient number, since it is larger than the sum of its proper divisors (1).

55262731 is an equidigital number, since it uses as much as digits as its factorization.

55262731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 31.

The square root of 55262731 is about 7433.8907040661. The cubic root of 55262731 is about 380.8998319856.

Adding to 55262731 its reverse (13726255), we get a palindrome (68988986).

The spelling of 55262731 in words is "fifty-five million, two hundred sixty-two thousand, seven hundred thirty-one".