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54436 = 2231439
BaseRepresentation
bin1101010010100100
32202200011
431102210
53220221
61100004
7314464
oct152244
982604
1054436
1137998
1227604
131ba15
1415ba4
15111e1
hexd4a4

54436 has 12 divisors (see below), whose sum is σ = 98560. Its totient is φ = 26280.

The previous prime is 54421. The next prime is 54437. The reversal of 54436 is 63445.

54436 = T189 + T190 + T191.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (54437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96 + ... + 343.

54436 is a Friedman number, since it can be written as 4+6^5*(4+3), using all its digits and the basic arithmetic operations.

254436 is an apocalyptic number.

54436 is the 191-st centered triangular number.

It is an amenable number.

54436 is a deficient number, since it is larger than the sum of its proper divisors (44124).

54436 is a wasteful number, since it uses less digits than its factorization.

54436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 472 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 54436 is about 233.3152373935. The cubic root of 54436 is about 37.8990858935.

Subtracting 54436 from its reverse (63445), we obtain a palindrome (9009).

The spelling of 54436 in words is "fifty-four thousand, four hundred thirty-six".

Divisors: 1 2 4 31 62 124 439 878 1756 13609 27218 54436