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472648057 = 767521151
BaseRepresentation
bin11100001011000…
…000100101111001
31012221101000020121
4130023000211321
51431444214212
6114522253241
714466304450
oct3413004571
91187330217
10472648057
11222885532
12112357221
1376bc950b
1446ab5b97
152b763d07
hex1c2c0979

472648057 has 4 divisors (see below), whose sum is σ = 540169216. Its totient is φ = 405126900.

The previous prime is 472648051. The next prime is 472648067. The reversal of 472648057 is 750846274.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 750846274 = 2375423137.

It is a cyclic number.

It is not a de Polignac number, because 472648057 - 23 = 472648049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (472648051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33760569 + ... + 33760582.

It is an arithmetic number, because the mean of its divisors is an integer number (135042304).

Almost surely, 2472648057 is an apocalyptic number.

It is an amenable number.

472648057 is a deficient number, since it is larger than the sum of its proper divisors (67521159).

472648057 is an equidigital number, since it uses as much as digits as its factorization.

472648057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67521158.

The product of its (nonzero) digits is 376320, while the sum is 43.

The square root of 472648057 is about 21740.4704870893. The cubic root of 472648057 is about 778.9554597024.

The spelling of 472648057 in words is "four hundred seventy-two million, six hundred forty-eight thousand, fifty-seven".

Divisors: 1 7 67521151 472648057