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49285717 = 133791209
BaseRepresentation
bin1011110000000…
…0101001010101
310102201222021221
42330000221111
5100104120332
64520210341
71135631065
oct274005125
9112658257
1049285717
11259030a8
12146099b1
13a298260
14678d3a5
1544d8297
hex2f00a55

49285717 has 4 divisors (see below), whose sum is σ = 53076940. Its totient is φ = 45494496.

The previous prime is 49285699. The next prime is 49285721. The reversal of 49285717 is 71758294.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71758294 = 235879147.

It can be written as a sum of positive squares in 2 ways, for example, as 33651601 + 15634116 = 5801^2 + 3954^2 .

It is a cyclic number.

It is not a de Polignac number, because 49285717 - 215 = 49252949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49285787) 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 3 ways as a sum of consecutive naturals, for example, 1895592 + ... + 1895617.

It is an arithmetic number, because the mean of its divisors is an integer number (13269235).

Almost surely, 249285717 is an apocalyptic number.

It is an amenable number.

49285717 is a deficient number, since it is larger than the sum of its proper divisors (3791223).

49285717 is a wasteful number, since it uses less digits than its factorization.

49285717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3791222.

The product of its digits is 141120, while the sum is 43.

The square root of 49285717 is about 7020.3786934894. The cubic root of 49285717 is about 366.6404351299.

The spelling of 49285717 in words is "forty-nine million, two hundred eighty-five thousand, seven hundred seventeen".

Divisors: 1 13 3791209 49285717