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4752121 = 111512861
BaseRepresentation
bin10010001000001011111001
322221102200111
4102020023321
52204031441
6245504321
755251403
oct22101371
98842614
104752121
112756380
1217120a1
13ca500a
148b9b73
1563d081
hex4882f9

4752121 has 8 divisors (see below), whose sum is σ = 5220288. Its totient is φ = 4290000.

The previous prime is 4752113. The next prime is 4752131. The reversal of 4752121 is 1212574.

4752121 = T346 + T347 + ... + T411.

It is a happy number.

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

It is not a de Polignac number, because 4752121 - 23 = 4752113 is a prime.

It is a Duffinian number.

4752121 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4752092 and 4752101.

It is not an unprimeable number, because it can be changed into a prime (4752131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231 + ... + 3091.

It is an arithmetic number, because the mean of its divisors is an integer number (652536).

Almost surely, 24752121 is an apocalyptic number.

It is an amenable number.

4752121 is a deficient number, since it is larger than the sum of its proper divisors (468167).

4752121 is a wasteful number, since it uses less digits than its factorization.

4752121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023.

The product of its digits is 560, while the sum is 22.

The square root of 4752121 is about 2179.9360082351. The cubic root of 4752121 is about 168.1237867917.

Adding to 4752121 its reverse (1212574), we get a palindrome (5964695).

The spelling of 4752121 in words is "four million, seven hundred fifty-two thousand, one hundred twenty-one".

Divisors: 1 11 151 1661 2861 31471 432011 4752121