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49000051 = 232130437
BaseRepresentation
bin1011101011101…
…0111001110011
310102012110102201
42322322321303
5100021000201
64510124031
71133331202
oct272727163
9112173381
1049000051
1125728511
12144b0617
13a1c8219
146717239
15447d801
hex2ebae73

49000051 has 4 divisors (see below), whose sum is σ = 51130512. Its totient is φ = 46869592.

The previous prime is 49000033. The next prime is 49000073. The reversal of 49000051 is 15000094.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49000051 - 217 = 48868979 is a prime.

It is a pancake number, because a pancake can be divided into 49000051 parts by 9899 straight cuts.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 48999992 and 49000028.

It is not an unprimeable number, because it can be changed into a prime (49000351) 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 3 ways as a sum of consecutive naturals, for example, 1065196 + ... + 1065241.

It is an arithmetic number, because the mean of its divisors is an integer number (12782628).

Almost surely, 249000051 is an apocalyptic number.

49000051 is a deficient number, since it is larger than the sum of its proper divisors (2130461).

49000051 is a wasteful number, since it uses less digits than its factorization.

49000051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130460.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 49000051 is about 7000.0036428562. The cubic root of 49000051 is about 365.9306979578.

The spelling of 49000051 in words is "forty-nine million, fifty-one", and thus it is an aban number and an uban number.

Divisors: 1 23 2130437 49000051