Search a number
54479 = 157347
BaseRepresentation
bin1101010011001111
32202201202
431103033
53220404
61100115
7314555
oct152317
982652
1054479
1137a27
122763b
131ba49
1415bd5
151121e
hexd4cf

54479 has 4 divisors (see below), whose sum is σ = 54984. Its totient is φ = 53976.

The previous prime is 54469. The next prime is 54493. The reversal of 54479 is 97445.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 97445 = 519489.

It is a cyclic number.

It is not a de Polignac number, because 54479 - 212 = 50383 is a prime.

It is a super-2 number, since 2×544792 = 5935922882, which contains 22 as substring.

It is a Duffinian number.

54479 is a Rhonda number in base 10.

Its product of digits (5040) is a multiple of the sum of its prime divisors (504).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54409) 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, 17 + ... + 330.

It is an arithmetic number, because the mean of its divisors is an integer number (13746).

254479 is an apocalyptic number.

54479 is a deficient number, since it is larger than the sum of its proper divisors (505).

54479 is a wasteful number, since it uses less digits than its factorization.

54479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504.

The product of its digits is 5040, while the sum is 29.

The square root of 54479 is about 233.4073692067. The cubic root of 54479 is about 37.9090623294.

The spelling of 54479 in words is "fifty-four thousand, four hundred seventy-nine".

Divisors: 1 157 347 54479