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55370929 = 311786159
BaseRepresentation
bin1101001100111…
…0010010110001
310212012010122011
43103032102301
5103133332204
65254442521
71241434165
oct323162261
9125163564
1055370929
1129289aa9
1216663441
13b618c83
1474d4ca5
154cdb304
hex34ce4b1

55370929 has 4 divisors (see below), whose sum is σ = 57157120. Its totient is φ = 53584740.

The previous prime is 55370923. The next prime is 55370957. The reversal of 55370929 is 92907355.

55370929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 92907355 = 518581471.

It is not a de Polignac number, because 55370929 - 25 = 55370897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55370891 and 55370900.

It is not an unprimeable number, because it can be changed into a prime (55370923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893049 + ... + 893110.

It is an arithmetic number, because the mean of its divisors is an integer number (14289280).

Almost surely, 255370929 is an apocalyptic number.

It is an amenable number.

55370929 is a deficient number, since it is larger than the sum of its proper divisors (1786191).

55370929 is a wasteful number, since it uses less digits than its factorization.

55370929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1786190.

The product of its (nonzero) digits is 85050, while the sum is 40.

The square root of 55370929 is about 7441.1644922015. The cubic root of 55370929 is about 381.1482557846.

The spelling of 55370929 in words is "fifty-five million, three hundred seventy thousand, nine hundred twenty-nine".

Divisors: 1 31 1786159 55370929