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52415947 = 1731791259
BaseRepresentation
bin1100011111110…
…0110111001011
310122122000011101
43013330313023
5101404302242
65111242231
71204346113
oct307746713
9118560141
1052415947
1127650971
1215679377
13ab22c6c
146d66043
1549059b7
hex31fcdcb

52415947 has 16 divisors (see below), whose sum is σ = 58060800. Its totient is φ = 47099520.

The previous prime is 52415941. The next prime is 52415977. The reversal of 52415947 is 74951425.

It is not a de Polignac number, because 52415947 - 219 = 51891659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52415941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41004 + ... + 42262.

It is an arithmetic number, because the mean of its divisors is an integer number (3628800).

Almost surely, 252415947 is an apocalyptic number.

52415947 is a deficient number, since it is larger than the sum of its proper divisors (5644853).

52415947 is a wasteful number, since it uses less digits than its factorization.

52415947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386.

The product of its digits is 50400, while the sum is 37.

The square root of 52415947 is about 7239.8858416414. The cubic root of 52415947 is about 374.2436833562.

It can be divided in two parts, 524 and 15947, that added together give a triangular number (16471 = T181).

The spelling of 52415947 in words is "fifty-two million, four hundred fifteen thousand, nine hundred forty-seven".

Divisors: 1 17 31 79 527 1259 1343 2449 21403 39029 41633 99461 663493 1690837 3083291 52415947