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55239572 = 2244930757
BaseRepresentation
bin1101001010111…
…0001110010100
310211221110110002
43102232032110
5103120131242
65251550432
71240346213
oct322561624
9124843402
1055239572
11291aa343
12165bb418
13b5a124b
14749d07a
154cb2432
hex34ae394

55239572 has 12 divisors (see below), whose sum is σ = 96887700. Its totient is φ = 27557376.

The previous prime is 55239529. The next prime is 55239607. The reversal of 55239572 is 27593255.

55239572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 28344976 + 26894596 = 5324^2 + 5186^2 .

It is a congruent number.

It is an unprimeable number.

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, 13583 + ... + 17174.

It is an arithmetic number, because the mean of its divisors is an integer number (8073975).

Almost surely, 255239572 is an apocalyptic number.

It is an amenable number.

55239572 is a deficient number, since it is larger than the sum of its proper divisors (41648128).

55239572 is a wasteful number, since it uses less digits than its factorization.

55239572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31210 (or 31208 counting only the distinct ones).

The product of its digits is 94500, while the sum is 38.

The square root of 55239572 is about 7432.3328773676. The cubic root of 55239572 is about 380.8466165449.

The spelling of 55239572 in words is "fifty-five million, two hundred thirty-nine thousand, five hundred seventy-two".

Divisors: 1 2 4 449 898 1796 30757 61514 123028 13809893 27619786 55239572