Search a number
-
+
54802181 = 767116849
BaseRepresentation
bin1101000100001…
…1011100000101
310211010020110102
43101003130011
5103012132211
65234333445
71233545060
oct321033405
9124106412
1054802181
1128a30765
121642a285
13b47a135
1473c78d7
154c27a3b
hex3443705

54802181 has 8 divisors (see below), whose sum is σ = 63566400. Its totient is φ = 46271808.

The previous prime is 54802177. The next prime is 54802183. The reversal of 54802181 is 18120845.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54802181 - 22 = 54802177 is a prime.

It is a super-2 number, since 2×548021812 = 6006558084713522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54802183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57956 + ... + 58893.

It is an arithmetic number, because the mean of its divisors is an integer number (7945800).

Almost surely, 254802181 is an apocalyptic number.

It is an amenable number.

54802181 is a deficient number, since it is larger than the sum of its proper divisors (8764219).

54802181 is a wasteful number, since it uses less digits than its factorization.

54802181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116923.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 54802181 is about 7402.8495189353. The cubic root of 54802181 is about 379.8387612339.

The spelling of 54802181 in words is "fifty-four million, eight hundred two thousand, one hundred eighty-one".

Divisors: 1 7 67 469 116849 817943 7828883 54802181