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50979993 = 319498719
BaseRepresentation
bin1100001001111…
…0010010011001
310112221001101220
43002132102121
5101022324433
65020402253
71156215501
oct302362231
9115831356
1050979993
1126860029
12150a6389
13a73c49c
146ab0a01
1547202b3
hex309e499

50979993 has 8 divisors (see below), whose sum is σ = 68016000. Its totient is φ = 33965328.

The previous prime is 50979979. The next prime is 50980003. The reversal of 50979993 is 39997905.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50979993 - 24 = 50979977 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50979893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1488 + ... + 10206.

It is an arithmetic number, because the mean of its divisors is an integer number (8502000).

Almost surely, 250979993 is an apocalyptic number.

It is an amenable number.

50979993 is a deficient number, since it is larger than the sum of its proper divisors (17036007).

50979993 is a wasteful number, since it uses less digits than its factorization.

50979993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10671.

The product of its (nonzero) digits is 688905, while the sum is 51.

The square root of 50979993 is about 7140.0275209554. The cubic root of 50979993 is about 370.7944774112.

The spelling of 50979993 in words is "fifty million, nine hundred seventy-nine thousand, nine hundred ninety-three".

Divisors: 1 3 1949 5847 8719 26157 16993331 50979993