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54278825 = 5215713829
BaseRepresentation
bin1100111100001…
…1101010101001
310210010122112212
43033003222221
5102343410300
65215214505
71226235206
oct317035251
9123118485
1054278825
1128703537
1216217435
13b325b63
1472cccad
154b72935
hex33c3aa9

54278825 has 12 divisors (see below), whose sum is σ = 67739340. Its totient is φ = 43143360.

The previous prime is 54278821. The next prime is 54278831. The reversal of 54278825 is 52887245.

It can be written as a sum of positive squares in 6 ways, for example, as 9909904 + 44368921 = 3148^2 + 6661^2 .

It is not a de Polignac number, because 54278825 - 22 = 54278821 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (54278821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2990 + ... + 10839.

It is an arithmetic number, because the mean of its divisors is an integer number (5644945).

Almost surely, 254278825 is an apocalyptic number.

It is an amenable number.

54278825 is a deficient number, since it is larger than the sum of its proper divisors (13460515).

54278825 is a wasteful number, since it uses less digits than its factorization.

54278825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13996 (or 13991 counting only the distinct ones).

The product of its digits is 179200, while the sum is 41.

The square root of 54278825 is about 7367.4164399741. The cubic root of 54278825 is about 378.6257493803.

The spelling of 54278825 in words is "fifty-four million, two hundred seventy-eight thousand, eight hundred twenty-five".

Divisors: 1 5 25 157 785 3925 13829 69145 345725 2171153 10855765 54278825