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49055689 = 199246511
BaseRepresentation
bin1011101100100…
…0011111001001
310102022021202101
42323020133021
5100024240224
64511233401
71133652334
oct273103711
9112267671
1049055689
11257662a1
1214518861
13a217647
14672d61b
154490044
hex2ec87c9

49055689 has 4 divisors (see below), whose sum is σ = 49302400. Its totient is φ = 48808980.

The previous prime is 49055683. The next prime is 49055719. The reversal of 49055689 is 98655094.

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: 98655094 = 249327547.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-49055689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49055683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123057 + ... + 123454.

It is an arithmetic number, because the mean of its divisors is an integer number (12325600).

Almost surely, 249055689 is an apocalyptic number.

It is an amenable number.

49055689 is a deficient number, since it is larger than the sum of its proper divisors (246711).

49055689 is a wasteful number, since it uses less digits than its factorization.

49055689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246710.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 49055689 is about 7003.9766561576. The cubic root of 49055689 is about 366.0691464607.

The spelling of 49055689 in words is "forty-nine million, fifty-five thousand, six hundred eighty-nine".

Divisors: 1 199 246511 49055689